Claim analyzed

Health

“Smoking increases androgen levels in women.”

The conclusion

Mostly True
7/10

Smoking is generally associated with modestly higher levels of some androgens in women. A 2022 meta-analysis and several clinical studies support this pattern, although an earlier meta-analysis found no clear association for testosterone specifically. Because the evidence is predominantly observational and varies by hormone and menopausal status, it does not firmly establish that smoking directly causes an increase in every androgen across all women.

Caveats

  • Low confidence conclusion.
  • The causal wording is stronger than the predominantly observational evidence supports.
  • Results differ by specific androgen, menopausal status, menstrual timing, and contraceptive use.
  • Several listed sources are duplicate publications or database versions of the same studies.

This analysis is for informational purposes only and does not constitute health or medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before making health-related decisions.

Sources

Ranked by source quality and relevance

#1
nejm.org 1988-06-30 | Cigarette Smoking and Levels of Adrenal Androgens in Postmenopausal Women | New England Journal of Medicine

Current cigarette smokers had significantly higher mean plasma levels of the adrenal androgens dehydroepiandrosterone sulfate and androstenedione than nonsmokers.An antiestrogenic effect of cigarette smoking has been suggested, principally on the basis of data on premenopausal women. We examined the relation between cigarette smoking and endogenous sex-hormone levels in a population of 233 white, postmenopausal women 60 to 79 years of age. Current cigarette smokers had significantly higher mean plasma levels of the adrenal androgens dehydroepiandrosterone sulfate and androstenedione than nonsmokers. Mean levels for smokers and nonsmokers were 3.1 μmol per liter (116 μg per deciliter) and 2.3 μmol per liter (86 μg per deciliter), respectively (P<0.001), for dehydroepiandrosterone sulfate, and 27.8 nmol per liter (797 pg per milliliter) and 22.5 nmol per liter (643 pg per milliliter), respectively (P = 0.002), for androstenedione. A dose–response relation was apparent for these hormones; mean plasma levels increased concomitantly with cigarette consumption. …

#2
doi.org 2014-01-01 | How Smoking Cessation Influence Hormonal Levels in Postmenopausal Women?

Women smokers have higher testosterone and lower estradiol levels throughout life compared to nonsmokers. … The increase in androgen production in women smokers throughout life from puberty to menopause has been described in studies consistently … Smoking causes higher androgen levels in women.Abstract Smoking represents the most widespread substance dependence in the world. Nicotine alters women hormonal homeostasis. Women smokers have higher testosterone and lower estradiol levels throughout life compared to nonsmokers. We monitored the effect of smoking discontinuation on steroid spectrum with 25 postmenopausal women smokers. They had been examined before discontinuation of smoking and after 6, 12, 24 and 48 weeks of abstinence. … ## Introduction The negative impact of tobacco smoking is complex. However, it influences biosynthesis and steroids effects among others. Smoking interferes with neuroactive steroid metabolism and addiction arises very quickly. Smoking in women has an anti-estrogenic effect. The increase in androgen production in women smokers throughout life from puberty to menopause has been described in studies consistently (Van Voorhis et al., 1992; Barbieri et al., 2005; Manjer et al., 2005; Cochran et al., 2008; Cupisti et al., 2010) . However, anti-estrogenic effect has not been confirmed in all studies. A number of studies have focused on the impact of smoking on female reproduction. … ## Conclusion Smoking causes higher androgen levels in women. Our results indicate that smoking discontinuation leads to their further increase. There are several hypotheses explaining elevated levels of androgens after smoking cessation. We considered the influence of nicotine in nicotine replacement therapy. …

#3
pubmed.ncbi.nlm.nih.gov 1990-06-01 | Smoking induces increased androgen levels in early post- ...

Smoking induces increased androgen levels in early post-menopausal womenSmoking induces increased androgen levels in early post-menopausal women - PubMed Clipboard, Search History, and several other advanced features are temporarily unavailable. Skip to main page content U.S. flag An official website of the United States government Here's how you know Dot gov **The .gov means it’s official.** Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site. Https **The site is secure.** The**https://**ensures that you are connecting to the …

#4
doi.org 2012-02-14 | Chronic Cigarette Smoking Alters Circulating Sex Hormones and Neuroactive Steroids in Premenopausal Women

In conclusion, chronic cigarette smoking augments serum androgens and their 5α/β-reduced metabolites (including GABAergic substances) but suppresses the levels of estradiol in the LP and SHBG and may induce hyperandrogenism in female smokers.… In the LP, the smokers exhibited higher levels of free and conjugated 20α-dihydropregnenolone, free and conjugated dehydroepiandrosterone, free androstenediol, 5α-dihydrotestosterone, free and conjugated androsterone, free and conjugated epiandrosterone, free and conjugated etiocholanolone, 7α/β-hydroxy-dehydroepiandrosterone isomers, and follitropin but lower levels of estradiol and sex hormone binding globulin (SHBG) and lower values of the lutropin/follitropin ratio. In conclusion, chronic cigarette smoking augments serum androgens and their 5α/β-reduced metabolites (including GABAergic substances) but suppresses the levels of estradiol in the LP and SHBG and may induce hyperandrogenism in female smokers. The female smokers had pronouncedly increased serum progestogens but paradoxically suppressed levels of their GABA-ergic metabolites. Further investigation is needed concerning these effects. Introduction

#5
doi.org 2018-01-03 | Current smoking is associated with a larger waist circumference and a more androgenic profile in young healthy women from high-risk breast cancer families

In non-OC users, adjusted mean androstenedione levels were higher in current smokers compared with non-smokers (10.3 vs. 8.6 nmol/L; adj p = 0.0002). … Compared with non-smokers, current smokers had higher adjusted mean levels of androstenedione ( adj p = 0.0002) and total testosterone ( adj p = 0.048), as well as a lower E2/T ratio ( adj p = 0.027). … In the present study, increased androstenedione and testosterone levels were observed in current smokers who were non-OC users, indicating that current smoking might be a contributing factor to the increase in androgens.… Women without smoking status, who were currently breastfeeding, or using hormonal contraception other than combined oral contraceptives (OCs) were excluded (n = 27). Current smokers (n = 57) had larger waist circumference ( adj p = 0.004) and waist-to-hip ratio (WHR) ( adj p = 0.007) than non-smokers (n = 185). In non-OC users, adjusted mean androstenedione levels were higher in current smokers compared with non-smokers (10.3 vs. 8.6 nmol/L; adj p = 0.0002). While in current OC users estradiol levels were higher in smokers compared with non-smokers (22.5 vs. 17.4 pg/mL; adj p = 0.012). In multivariable models, WHR was associated with both current smoking ( adj p ≤ 0.016) and higher levels of androstenedione ( adj p = 0.05) or bioavailable testosterone ( adj p = 0.001). … Women were stratified according to current OC use. Hormone levels in non-OC users in relation to current smoking are presented in Table 3 . Compared with non-smokers, current smokers had higher adjusted mean levels of androstenedione ( adj p = 0.0002) and total testosterone ( adj p = 0.048), as well as a lower E2/T ratio ( adj p = 0.027). No differences between non-smokers and current smokers were observed for bioavailable testosterone, SHBG, or estradiol. Hormone levels in current OC users are presented in Table 4 . Current smokers had significantly higher adjusted mean estradiol levels compared with non-smokers ( adj p = 0.012). … Both testosterone and androstenedione levels have been implicated as breast cancer risk factors in pre-and postmenopausal women [1, 2, 15, 31, 32] . In the present study, increased androstenedione and testosterone levels were observed in current smokers who were non-OC users, indicating that current smoking might be a contributing factor to the increase in androgens. Nicotine also acts as an aromatase inhibitor, which may partly explain the androgenic profile [2] . Furthermore, this increase in androgen levels might be related to increasing WHR. …

#6
doi.org 2005-02-01 | Association of body mass index, age, and cigarette smoking with serum testosterone levels in cycling women undergoing in vitro fertilization

A history of cigarette smoking 10 pack years was associated with increased serum T (P .01). … In cycling infertile women, increasing BMI and cigarette smoking are associated with increased serum T. … Consistent with our findings, other studies have reported that serum T is increased in premenopausal smokers com pared to nonsmokers.… Result(s): Body mass index 26 kg/m 2 was associated with a significant increase in serum T (P .01) and free androgen index (P .0001). Serum T decreased significantly throughout the fourth decade of life (P .03). A history of cigarette smoking 10 pack years was associated with increased serum T (P .01). A diagnosis of endometriosis was associated with decreased serum T. Serum T correlated positively with pre-hCG serum E2 and number of oocytes retrieved. However, serum T did not significantly influence fertilization or pregnancy rates. Conclusion(s): In cycling infertile women, increasing BMI and cigarette smoking are associated with increased serum T. Advancing age and endometriosis are associated with decreased serum T. (Fertil Steril 2005;83:302–8. ©2005 by American Society for Reproductive Medicine.) Key Words: Testosterone, SHBG, IVF, BMI, age, cigarette smoking, endometriosis, pregnancy … This resulted in an increase in FAI during this interval. The investigators speculated that decreases in E2 during the transition to menopause may account for the decrease in serum SHBG and increase in FAI (10). Consistent with our findings, other studies have reported that serum T is increased in premenopausal smokers com pared to nonsmokers. For example, in both the SWAN study (3) and the Michigan Bone Health Study (7), serum T was reported to be increased in women who were current smok ers compared to never smokers. In women undergoing IVF, cigarette smokers appear to have increased concentrations of T (11). …

#7
doi.org 2017-09-16 | The Influence of Smoking and Cessation on the Human Reproductive Hormonal Balance

Data from the literature agree that smoking increases the levels of androgens at all stages of life.… 2005) . The average plasma concentrations of androstenedione have been found to be higher in smokers versus non-smokers, but levels of testosterone, estrone, and estradiol were unchanged (Longcope and Johnston 1998) . However, our own investigations have demonstrated that fertile women smokers have lower levels of estradiol, but only in the luteal phase (Duskova et al. 2012) . Data from the literature agree that smoking increases the levels of androgens at all stages of life. Martin et al. (2001) performed a pilot study focused on the relationships between testosterone levels, carbon monoxide, current smoking, and smoking during adolescence and the beginning of puberty in groups of young female smokers. Testosterone levels positively correlated with the number of cigarettes smoked in the prior 30 days, carbon monoxide levels, and smoking in the seventh and tenth grades of basic school, and negatively correlated with the age of onset of puberty (Martin et al. 2001) . …

#8
pubmed.ncbi.nlm.nih.gov 2022-10-26 | A Systematic Review and Meta-Analysis of Smoking ...

This meta-analysis suggests that smoking may increase blood androgen levels in healthy premenopausal women which may increase breast cancer risk; however, the differences were modest.… **Results:**Nineteen published peer-reviewed articles were included. Significantly increased testosterone levels among smokers compared to nonsmokers were identified from cross-sectional studies with varied menstrual phase timing (SMD 0.14; 95% CI 0.0005, 0.29) and significantly increased dehydroepiandrosterone-sulfate levels were found over all phases (SMD 0.12; 95% CI 0.01, 0.22). However, substantial heterogeneity existed in these studies. **Conclusions:**This meta-analysis suggests that smoking may increase blood androgen levels in healthy premenopausal women which may increase breast cancer risk; however, the differences were modest. Larger and covariate-adjusted studies with standardized collection over the menstrual cycle are needed to better understand this relationship and to reduce heterogeneity. **Implications:**Existing research has described associations between high prediagnostic estradiol and androgen levels with breast cancer risk among premenopausal women and has established active smoking as a breast cancer risk factor. …

#9
europepmc.org 2011-08-10 | Cigarette smoking and endogenous sex hormones in postmenopausal women. - Abstract

Cigarette smoking is associated with higher circulating levels of androgens, estrogens, 17-hydroxprogesterone, and SHBG in postmenopausal women.Conclusions Cigarette smoking is associated with higher circulating levels of androgens, estrogens, 17-hydroxprogesterone, and SHBG in postmenopausal women. The almost immediate lower levels with smoking cessation may indicate that hormone related disease risks could potentially be modified by changing smoking habits. Full text links

#10
onlinelibrary.wiley.com 2004-12-03 | Endocrine effects of tobacco smoking

Smokers have substantially higher serum levels of dehydroepiandrosterone (DHEA), its sulfate (DHEAS) and androstenedione (Hautanen*etal*., 1993;Field*etal*., 1994;Baron*etal*., 1995;al'Absi*etal*., 2003). … The relative hyperandrogenism of ovarian origin, which is apparent in smokers, with higher serum androstendione, DHEAS and testosterone/SHBG ratio, may contribute to the lower pregnancy rate at*invitro*fertilization in this group (Byrne*etal*., 1991;Gustafson*etal*., 1996).… Whether this can be attributed to a smoking-induced decrease in the activity of either 21- or 11-beta-hydroxylase in the adrenal cortex, resulting in increased secretion of adrenal androgens, or to other mechanisms has not been clarified (Hautanen & Adlercreutz, 1993;Hautanen*etal*., 1993;Baron*etal*., 1995). However, peripherally mediated effects may also be important, as nicotine can act additively with ACTH to stimulate adrenal steroidogenesis (Fuxe*etal*., 1989). Smokers have substantially higher serum levels of dehydroepiandrosterone (DHEA), its sulfate (DHEAS) and androstenedione (Hautanen*etal*., 1993;Field*etal*., 1994;Baron*etal*., 1995;al’Absi*etal*., 2003). There is also extensive evidence that cigarette smoking acutely increases circulating cortisol levels (Winternitz & Quillen, 1977;Wilkins*etal*., 1982;Seyler*etal*., 1984). Chronic smoking results in higher levels of plasma and salivary cortisol (Field*etal*., 1994;Baron*etal*., 1995); however, normal levels of urinary cortisol in smokers have also been reported (Yeh & Barbieri, 1989). … Women who smoked during their treatment cycle had approximately a 50% reduction in implantation rate and ongoing pregnancy rate compared with women who had never smoked (Pattinson*etal*., 1991;Van Voorhis*etal*., 1996). In conclusion, cigarette smoking in women appears to significantly reduce their ovarian reserve and lead to poor response to ovarian stimulation at an earlier age (Sharara*etal*., 1994;Van Voorhis*etal*., 1996;El-Nemr*etal*., 1998). The relative hyperandrogenism of ovarian origin, which is apparent in smokers, with higher serum androstendione, DHEAS and testosterone/SHBG ratio, may contribute to the lower pregnancy rate at*invitro*fertilization in this group (Byrne*etal*., 1991;Gustafson*etal*., 1996). Nevertheless, these adverse effects appear to be reversible in women who quit smoking before initiating treatment; these women have the same pregnancy rate as nonsmokers (Van Voorhis*etal*., 1996). …

#11
doi.org 2011-08-11 | Cigarette Smoking and Endogenous Sex Hormones in Postmenopausal Women

Conclusions: Cigarette smoking is associated with higher circulating levels of androgens, estrogens, 17-hydroxprogesterone, and SHBG in postmenopausal women.… No clear dose-response relationship was observed for estrone, although its levels were highest in heavy smokers. Current smoking habit was associated with a larger difference in sex hormone levels than lifetime cigarette exposure as measured by pack-years. Among former smokers, sex hormones were at levels of never smokers within 1-2 yr of smoking cessation. Conclusions: Cigarette smoking is associated with higher circulating levels of androgens, estrogens, 17-hydroxprogesterone, and SHBG in postmenopausal women. The almost immediate lower levels with smoking cessation may indicate that hormone related disease risks could potentially be modified by changing smoking habits. ( leaving 2030 participants for the analyses. Three hundred fourteen women (15.5%) had missing values on one or more covariates. …

#12
link.springer.com 2005-04-01 | Smoking as a determinant for plasma levels of testosterone, androstenedione, and DHEAs in postmenopausal women

We conclude that current smoking, and increasing amount of daily smoking, is associated with high testosterone levels.… never smokers, OR1.85 (1.06–3.23). Risk of high testosterone levels increased by amount of daily smoking (increments of 10 cigarettes/day), OR 1.55 (1.02–2.37). Ex-smoking was associated with high testosterone levels, OR: 1.56 (0.98–2.47). Current smoking and increasing amount of current smoking were weakly associated with high androstenedione levels. However, these associations did not reach statistical significance. No association was seen between smoking habits and DHEAs levels. We conclude that current smoking, and increasing amount of daily smoking, is associated with high testosterone levels. Current smoking is associated with a larger waist circumference and a more androgenic profile in young healthy women from high-risk breast cancer families

#13
link.springer.com 2018-01-03 | Current smoking is associated with a larger waist circumference and a more androgenic profile in young healthy women from high-risk breast cancer families

Among non-OC users, a more androgenic profile was observed in current smokers compared with non-smokers, but not in current OC users.… In non-OC users, adjusted mean androstenedione levels were higher in current smokers compared with non-smokers (10.3 vs. 8.6 nmol/L; adjp=0.0002). While in current OC users estradiol levels were higher in smokers compared with non-smokers (22.5 vs. 17.4 pg/mL; adjp=0.012). In multivariable models, WHR was associated with both current smoking (adjp≤0.016) and higher levels of androstenedione (adjp=0.05) or bioavailable testosterone (adjp=0.001). Among non-OC users, a more androgenic profile was observed in current smokers compared with non-smokers, but not in current OC users. Irrespective of OC use, current smoking was associated with increased waist circumference. Keywords Smoking · Testosterone · Oral contraceptives · Androstenedione · Waist-to-hip ratio · Breast cancer Introduction Cigarette smoke is considered a carcinogen, which causes lung cancer as well as several other types of cancer, including pancreatic, liver, ovarian, cervical, and uterine cancers [1]. Whether cigarette smoke causes breast cancer has been heavily debated [2, 3]. …

#14
pmc.ncbi.nlm.nih.gov 2012-11-06 | Potential Contribution of Aromatase Inhibition to the Effects of Nicotine and Related Compounds on the Brain

In perimenopausal women ages 45–54, current smokers had significantly higher androstenedione levels and a higher androgen to estrogen ratio than never smokers.… There appear to be important sex differences in the control of food intake (Geary and Lovejoy,2008). Interestingly, in male rodents, peripubertal inhibition of aromatase leads to a decrease rather than an increase in body growth and weight gain (Bajpai et al.,2010). Hot flashes Current smoking (and high BMI), reportedly predispose women to more severe or frequent hot flashes (Whiteman et al.,2003). In perimenopausal women ages 45–54, current smokers had significantly higher androstenedione levels and a higher androgen to estrogen ratio than never smokers. Current smokers also had lower progesterone levels and increased odds of experiencing hot flushes compared to never smokers (Cochran et al.,2008). This effects is sex specific since there are no reports on hot flushes in healthy male smokers. It is noteworthy that men treated for prostate cancer with androgen ablation therapy (e.g., by injections of gonadotropin-releasing hormone analogs) report daily hot flashes, which respond to estrogen treatment (Gerber et al.,2000). …

#15
doi.org 2022-03-11 | A Systematic Review and Meta-Analysis of Smoking and Circulating Sex Hormone Levels Among Premenopausal Women

This meta-analysis suggests that smoking may increase blood androgen levels in healthy premenopausal women which may increase breast cancer risk; however, the differences were modest.… RESULTS: Nineteen published peer-reviewed articles were included. Significantly increased testosterone levels among smokers compared to nonsmokers were identified from cross-sectional studies with varied menstrual phase timing (SMD 0.14; 95% CI 0.0005, 0.29) and significantly increased dehydroepiandrosterone-sulfate levels were found over all phases (SMD 0.12; 95% CI 0.01, 0.22). However, substantial heterogeneity existed in these studies. CONCLUSIONS: This meta-analysis suggests that smoking may increase blood androgen levels in healthy premenopausal women which may increase breast cancer risk; however, the differences were modest. Larger and covariate-adjusted studies with standardized collection over the menstrual cycle are needed to better understand this relationship and to reduce heterogeneity. IMPLICATIONS: Existing research has described associations between high prediagnostic estradiol and androgen levels with breast cancer risk among premenopausal women and has established active smoking as a breast cancer risk factor. …

#16
pubmed.ncbi.nlm.nih.gov 2016-01-04 | Cigarette smoking and testosterone in men and women

A. Schlemmer, Jan H. Jensen, B.J. Riis, Claus Christiansen. Smoking induces increased androgen levels in early post-menopausal women. Maturitas. 1990;12(2):99-104. doi:10.1016/0378-5122(90)90087-m.… Effects of Smoking on Testicular Function, Semen Quality and Sperm Fertilizing Capacity. The Journal of Urology. 1995;154(3):1030-1034. doi:10.1016/s0022-5347(01)66968-4. - Al-Ali B.E. Mohamad, Martin Marszalek, T. Gutschi, Karl Pummer, Harald Trummer. 103 EVALUATION OF LH, FSH, PROLACTIN, TESTOSTERONE AND ESTRADIOL SERUM LEVELS AND INFLUENCE OF CIGARETTE SMOKING IN 716 PATIENTS WITH TESTICULAR VARICOCELE. European Urology Supplements. 2009;8(4):146. doi:10.1016/s1569-9056(09)60109-3. - A. Schlemmer, Jan H. Jensen, B.J. Riis, Claus Christiansen. Smoking induces increased androgen levels in early post-menopausal women. Maturitas. 1990;12(2):99-104. doi:10.1016/0378-5122(90)90087-m. - Offie P. Soldin, Kepher H. Makambi, Steven J. Soldin, Daniel M. O’Mara. Steroid hormone levels associated with passive and active smoking. Steroids. 2011;76(7):653-659. doi:10.1016/j.steroids.2011.02.042. - Adetunji T. Toriola, Marja Vääräsmäki, Matti Lehtinen, Anne Zeleniuch‐Jacquotte, Eva Lundin, Kenneth-Gary Rodgers, et al. Determinants of Maternal Sex Steroids During the First Half of Pregnancy. Obstetrics and Gynecology. 2011;118(5):1029-1036. doi:10.1097/aog.0b013e3182342b7f. - James D. …

#17
europepmc.org 2016-01-04 | Cigarette smoking and testosterone in men and women: A systematic review and meta-analysis of observational studies. - Abstract

In 6 studies of 6089 women, mean age 28-62years, smoking was not clearly associated with testosterone (0.11nmol/L, 95% CI -0.08 to 0.30).… Two reviewers independently searched, selected, assessed quality and abstracted with differences resolved by consensus or reference to a third reviewer. The initial search yielded 2881 studies; 28 met the selection criteria. In 22 studies of 13,317 men, mean age 18-61years, smokers had higher mean testosterone than non-smokers (1.53nmol/L, 95% confidence interval (CI) 1.11 to 1.96) using a random effects model with inverse variance weighting. In 6 studies of 6089 women, mean age 28-62years, smoking was not clearly associated with testosterone (0.11nmol/L, 95% CI -0.08 to 0.30). Fixed effects models provided similar results, but suggested a positive association in women. Whether products which raise cotinine, such as e-cigarettes or nicotine replacement, also raise testosterone, should be investigated, to inform any regulatory action for e-cigarettes, which emit nicotine into the surrounding air, with relevance for both active and passive smokers. Full text links

#18
pubmed.ncbi.nlm.nih.gov Smoking as a determinant for plasma levels of testosterone, androstenedione, and DHEAs in postmenopausal women

There was a high risk of high testosterone levels (above the median) in current vs. never smokers, OR: 1.85 (1.06-3.23). … We conclude that current smoking, and increasing amount of daily smoking, is associated with high testosterone levels.… The present study was based on 407 control subjects from a previous nested case-control study on the relation between steroid hormone levels and risk of breast cancer. A multivariate logistic regression analysis, adjusted for potential confounders, was used in order to obtain odds ratios (OR) with 95% confidence intervals. There was a high risk of high testosterone levels (above the median) in current vs. never smokers, OR: 1.85 (1.06-3.23). Risk of high testosterone levels increased by amount of daily smoking (increments of 10 cigarettes/day), OR: 1.55 (1.02-2.37). Ex-smoking was associated with high testosterone levels, OR: 1.56 (0.98-2.47). Current smoking and increasing amount of current smoking were weakly associated with high androstenedione levels. However, these associations did not reach statistical significance. No association was seen between smoking habits and DHEAs levels. We conclude that current smoking, and increasing amount of daily smoking, is associated with high testosterone levels. Publication types

#19
doi.org 2010-09-01 | Cigarette smoking and endogenous sex hormone levels in postmenopausal women

These results confirm previous reports that current cigarette smoking increases total estrone, estradiol, androstenedione, and SHBG levels in postmenopausal women regardless of current HRT use.… Total estrone and estradiol concentrations were also significantly higher among past smokers compared to never smokers. Testosterone concentrations (0.41, 0.37, 0.39ng/ml) were not associated with smoking status. Conclusion: These results confirm previous reports that current cigarette smoking increases total estrone, estradiol, androstenedione, and SHBG levels in postmenopausal women regardless of current HRT use. The lower prolactin levels could be explained by the inhibition of prolactin secretion by high levels of dopamine among smokers. Authors

#20
doi.org 1988-08-01 | Androgen and Estrogen Dynamics in Pre- and Postmenopausal Women: A Comparison Between Smokers and Nonsmokers*

These results indicate that smoking does not alter the production and metabolism of androgens and estrogens in pre- and postmenopausal women. … However, because the women who smoked were less heavy than those who were nonsmokers, their androgen and estrogen MCRs were lower, leading to a greater plasma A concentration.… The mean plasma A concentration was higher in the smokers than in the nonsmokers but plasma testosterone, estrone, and estradiol concentrations were not different. The PB values for all steroids, the interconversions of the androgens and the estrogens, and the peripheral aromatization of the androgens were not different in the 2 groups. These results indicate that smoking does not alter the production and metabolism of androgens and estrogens in pre- and postmenopausal women. However, because the women who smoked were less heavy than those who were nonsmokers, their androgen and estrogen MCRs were lower, leading to a greater plasma A concentration. Our data do not rule out an effect of smoking on other specific pathways of estrogen metabolism. Authors

#21
doi.org 2024-09-26 | Nicotine as a female reproductive toxicant—A review

The assay's findings indicated that the greatest dose of nicotine considerably reduced the granulosa cells' ability to produce estradiol, indicating cytotoxic effects and suppression of androgen synthesis (Sanders et al., 2002) .… Significant reductions in P450arom expression were also observed at the protein level, demonstrating that ovarian granulosa cells are inhibiting the synthesis of estradiol (Fan et al., 2019) Sanders and coworkers isolated granulosa cells and theca interna from bovine follicles, and they subsequently cultivated with nicotine or cotinine for 24 hours. Following this, the levels of androstenedione and estradiol were measured in the culture fluids. The assay's findings indicated that the greatest dose of nicotine considerably reduced the granulosa cells' ability to produce estradiol, indicating cytotoxic effects and suppression of androgen synthesis (Sanders et al., 2002) . 85% of the women in community-based research conducted in Karnataka reported having dysmenorrhea, and 42% had oligomenorrhea, indicating that tobacco smoking among the women caused considerable aberrations in menstrual cycle patterns. Freour and coworkers assessed anti-mullerian hormone (AMH) on

#22
pubmed.ncbi.nlm.nih.gov How smoking cessation influence hormonal levels in ...

Women smokers have higher testosterone and lower estradiol levels throughout life compared to nonsmokers. … Women smokers have higher androgen levels, which might play a role in smoking dependence development.Abstract Smoking represents the most widespread substance dependence in the world. Nicotine alters women hormonal homeostasis. Women smokers have higher testosterone and lower estradiol levels throughout life compared to nonsmokers. We monitored the effect of smoking discontinuation on steroid spectrum with 25 postmenopausal women smokers. They had been examined before discontinuation of smoking and after 6, 12, 24 and 48 weeks of abstinence. Blood was collected to determine steroid spectrum (measured by GC-MS), luteinizing hormone, follicle stimulating hormone and sex hormone binding globulin (measured by IRMA). Repeated measures ANOVA model was used for evaluation of the data. In postmenopausal women, an increase in testosterone, dihydrotestosterone, dehydroepiandrosterone and other androgens occurred. Neither nicotine replacement therapy nor weight changes nor age play a role in androgen level increase. The higher androgens levels correlated with failure in smoking cessation. Women smokers have higher androgen levels, which might play a role in smoking dependence development. Women successful in smoking cessation, compared to the non-successful ones, have lower androgen levels initially and also after smoking discontinuation. Publication types

#23
pubmed.ncbi.nlm.nih.gov Impact of smoking or second-hand smoke exposure on metabolic and hormonal levels in women with polycystic ovary syndrome: A systematic review and meta-analysis

Compared with non-exposed participants, smoking or SHS exposure was associated with higher Homeostasis Model Assessment for Insulin Resistance (HOMA-IR) (SMD = 0.16, 95% CI [0.05, 0.27]), Triglyceride (TG) (SMD = 0.25, 95% CI [0.08, 0.42]), Low-Density Lipoprotein Cholesterol (LDL-C) (SMD = 0.16, 95% CI [0.003, 0.33]), Total Testosterone (TT) (SMD = 0.21, 95% CI [0.12, 0.29]) and Free Androgen Index (FAI) (SMD = 0.34, 95% CI [0.14, 0.53]), and lower High-Density Lipoprotein Cholesterol (HDL-C) (SMD = -0.15, 95% CI [-0.25, -0.05]) and Sex Hormone-Binding Globulin (SHBG) (SMD = -0.19, 95% CI [-0.34, -0.04]) (P < 0.05).… Study quality was assessed using the Newcastle-Ottawa and AHRQ scales. Random-effects models in Stata pooled SMD with 95% CI. Subgroup analyses evaluated SHS-only exposure; sensitivity analyses assessed robustness; publication bias was examined by funnel plots, Egger's regression, and Begg's test. Evidence certainty was graded using GRADE. Results: Nine studies were included. Compared with non-exposed participants, smoking or SHS exposure was associated with higher Homeostasis Model Assessment for Insulin Resistance (HOMA-IR) (SMD = 0.16, 95% CI [0.05, 0.27]), Triglyceride (TG) (SMD = 0.25, 95% CI [0.08, 0.42]), Low-Density Lipoprotein Cholesterol (LDL-C) (SMD = 0.16, 95% CI [0.003, 0.33]), Total Testosterone (TT) (SMD = 0.21, 95% CI [0.12, 0.29]) and Free Androgen Index (FAI) (SMD = 0.34, 95% CI [0.14, 0.53]), and lower High-Density Lipoprotein Cholesterol (HDL-C) (SMD = -0.15, 95% CI [-0.25, -0.05]) and Sex Hormone-Binding Globulin (SHBG) (SMD = -0.19, 95% CI [-0.34, -0.04]) (P < 0.05). No significant difference was found in Luteinizing Hormone to Follicle-Stimulating Hormone Ratio (LH/FSH). TG and TT associations persisted in SHS-only groups, whereas HOMA-IR, HDL-C, FAI, and SHBG differences were mainly driven by active smoking. Findings were robust, with no publication bias; GRADE certainty was "very low". Conclusion: Smoking or SHS exposure was significantly associated with metabolic and hormonal profiles in women with PCOS. …

#24
pmc.ncbi.nlm.nih.gov 2011-03-17 | Steroid hormone levels associated with passive and active smoking

When classified by serum cotinine levels, median concentrations of testosterone, cortisol, and androgen steroid hormone analytes were highest in non-smokers, while active smokers had higher median concentrations of testosterone and cortisol than passive smokers. … Furthermore, passive smokers had elevated levels of androstenedione, DHEA, and DHEAS analytes compared to non-smokers and smokers.… ### 3.2. Corticosteroids Corticosteroid analytes corticosterone and 11-deoxycortisol had similar trends to estrone and 16-OHE1 estrogen analytes when classified by cotinine. Non-smokers had higher median concentrations of corticosterone and 11-deoxycortisol than passive smokers, while passive smokers had higher median concentrations than active smokers. When classified by self-report, corticosterone showed the same trend. 3.3. Androgens When classified by serum cotinine levels, median concentrations of testosterone, cortisol, and androgen steroid hormone analytes were highest in non-smokers, while active smokers had higher median concentrations of testosterone and cortisol than passive smokers. Furthermore, passive smokers had elevated levels of androstenedione, DHEA, and DHEAS analytes compared to non-smokers and smokers. When classified by self-report status, non-smokers had the highest median concentrations of testosterone. In addition, passive smokers had elevated levels of cortisol compared to non-smokers and smokers. 3.4. Isoprene derivative The median concentrations of 25-OHVitD3 were the highest in non-smokers when classified by serum cotinine levels, while passive smokers had higher concentrations than active smokers. …

#25
pmr.lf1.cuni.cz 2014-01-25 | How Smoking Cessation Influence Hormonal Levels in Postmenopausal Women?

The increase in androgen production in women smokers throughout life from puberty to menopause has been described in studies consistently (Van Voorhis et al., 1992; Barbieri et al., 2005; Manjer et al., 2005; Cochran et al., 2008; Cupisti et al., 2010). … Conclusion Smoking causes higher androgen levels in women.… Mailing Address: Michaela Dušková, MD., PhD., Institute of Endocrinology, Národní 8, 116 94 Prague 1, Czech Republic; Phone: +420 224 905 280; e-mail: mduskova@endo.cz Introduction The negative impact of tobacco smoking is complex. However, it influences biosynthesis and steroids effects among others. Smoking interferes with neuroactive steroid metabolism and addiction arises very quickly. Smoking in women has an anti-estrogenic effect. The increase in androgen production in women smokers throughout life from puberty to menopause has been described in studies consistently (Van Voorhis et al., 1992; Barbieri et al., 2005; Manjer et al., 2005; Cochran et al., 2008; Cupisti et al., 2010). However, anti-estrogenic effect has not been confirmed in all studies. A number of studies have focused on the impact of smoking on female reproduction. They have reported increased incidence of infertility in women smokers (Thomford and Mattison, 1986; Weigert et al., 1999). In fertile women, smoking may also influence hormonal contraception effects negatively: this may lead to higher incidence of off-cycle spotting and bleeding (Rosenberg et al., 1996). … daughters’ smoking, however prenatal cotinine levels did not. The testosterone level in mothers smokers is probably a risk factor for daughters’ smoking (Kandel and Udry, 1999). It seems that a higher testosterone level could be a predisposition for smoking. Another theory is a chronic effect on steroidogenesis caused by smoking which produces irreversible changes in steroidogenesis. Their extent could play a role in maintaining dependence. Conclusion Smoking causes higher androgen levels in women. Our results indicate that smoking discontinuation leads to their further increase. There are several hypotheses explaining elevated levels of androgens after smoking cessation. We considered the influence of nicotine in nicotine replacement therapy. However levels of cotinine, which reflects nicotine income, do not correlate with levels of androgens. Neither gaining weight nor ageing process was associated with androgen levels. The question is what androgen levels women have before they …

#26
biomed.cas.cz 2017-12-01 | The Influence of Smoking and Cessation ...

Data from the literature agree that smoking increases the levels of androgens at all stages of life.… 2005). The average plasma concentrations of androstenedione have been found to be higher in smokers versus non-smokers, but levels of testosterone, estrone, and estradiol were unchanged (Longcope and Johnston 1998). However, our own investigations have demonstrated that fertile women smokers have lower levels of estradiol, but only in the luteal phase (Duskova et al. 2012). Data from the literature agree that smoking increases the levels of androgens at all stages of life. Martin et al. (2001) performed a pilot study focused on the relationships between testosterone levels, carbon monoxide, current smoking, and smoking during adolescence and the beginning of puberty in groups of young female smokers. Testosterone levels positively correlated with the number of cigarettes smoked in the prior 30 days, carbon monoxide levels, and smoking in the seventh and tenth grades of basic school, and negatively correlated with the age of onset of puberty (Martin et al. 2001). …

#27
doi.org 1993-08-01 | Endocrinology: The impact of cigarette smoking on the plasma concentrations of gonadotrophins, ovarian steroids and androgens and upon the metabolism of oestrogens in the human female

There was no significant difference in plasma concentrations of testosterone, androstenedione and dehydroepiandrosterone sulphate.… Cigarette smoking did not consistently suppress LH pulsatility. There was no significant difference in the length of either the follicular or luteal phases. There were no significant differences in the mean plasma oestradiol concentrations in the follicular phase in smokers compared to non-smokers. There were no significant differences in the mean salivary progesterone concentration in the luteal phase in smokers compared to non-smokers. There was no significant difference in plasma concentrations of testosterone, androstenedione and dehydroepiandrosterone sulphate. There was also no significant difference between the urinary concentrations of oestradiol, oestrone or oestriol. We have been unable to demonstrate a detrimental effect of cigarette smoking on any of the important endocrine characteristics of the menstrual cycle, and we conclude that these data suggest that the anti-oestrogenic effect of smoking does not work through alterations in pituitary or follicular endocrine function or in alterations in the metabolism of oestrogens. Authors

#28
doi.org 2002-11-01 | Effects of smoking cessation or reduction on hormone profiles and bone turnover in postmenopausal women

After controlling for differences in age and ERT use between groups, we found a significant change in SHBG in the SC vs. the WLC group (-8% vs. +5%, respectively; p = 0.01), and in DHEA (-18% vs. -5%, respectively; p = 0.04), but not in other hormonal concentrations.… Analyses included 20 subjects who quit or significantly reduced their smoking and 18 subjects in the WLC group. After controlling for differences in age and ERT use between groups, we found a significant change in SHBG in the SC vs. the WLC group (-8% vs. +5%, respectively; p = 0.01), and in DHEA (-18% vs. -5%, respectively; p = 0.04), but not in other hormonal concentrations. We also noted a significant change in NTx in the SC vs. WLC group (-5% vs. +56%, respectively, p = 0.01), but not in other markers of bone turnover. Percentage changes in SHBG and NTx were correlated with changes in plasma cotinine (r = 0.48; p = 0.004 and r = 0.36; p = 0.04, respectively). Six weeks of smoking abstinence produces reductions in SHBG and NTx. This may partly explain how smoking contributes to osteoporosis in postmenopausal women. Authors

#29
pubmed.ncbi.nlm.nih.gov 2017-09-26 | The influence of smoking and cessation on the human ...

In women, nicotine has an anti-estrogen effect and increases the ratio of androgens to estrogens throughout life.… Here, we examined studies that describe the influence of smoking and smoking cessation on the male and female reproductive systems. We also focused on studies providing an account of differences in cessation success rates between men and women. In men, the most common effects associated with smoking are erectile dysfunction and decreasing spermiogram quality. Several groups have studied the effects of cigarette smoking on testosterone levels in men. However, the results have been conflicting. In women, nicotine has an anti-estrogen effect and increases the ratio of androgens to estrogens throughout life. Beside nicotine, other cigarette toxins also cause dysregulation of reproductive and hormonal system, and essentially influence the probability of a successful pregnancy not only in cases of assisted reproduction but also in healthy women. Tobacco addiction is one of the forms of addiction that are generally thought to be different for men and for women. Women are less successful than men in quitting smoking, and nicotine replacement therapy is less effective in female smokers. …

#30
pmr.lf1.cuni.cz 2014-11-22 | How Smoking Cessation Influence Hormonal Levels in Postmenopausal Women? | Prague Medical Report

Women smokers have higher testosterone and lower estradiol levels throughout life compared to non-smokers. … Women smokers have higher androgen levels, which might play a role in smoking dependence development.Smoking represents the most widespread substance dependence in the world. Nicotine alters women hormonal homeostasis. Women smokers have higher testosterone and lower estradiol levels throughout life compared to non-smokers. We monitored the effect of smoking discontinuation on steroid spectrum with 25 postmenopausal women smokers. They had been examined before discontinuation of smoking and after 6, 12, 24 and 48 weeks of abstinence. Blood was collected to determine steroid spectrum (measured by GC-MS), luteinizing hormone, follicle stimulating hormone and sex hormone binding globulin (measured by IRMA). Repeated measures ANOVA model was used for evaluation of the data. In postmenopausal women, an increase in testosterone, dihydrotestosterone, dehydroepiandrosterone and other androgens occurred. Neither nicotine replacement therapy nor weight changes nor age play a role in androgen level increase. The higher androgens levels correlated with failure in smoking cessation. Women smokers have higher androgen levels, which might play a role in smoking dependence development. Women successful in smoking cessation, compared to the non-successful ones, have lower androgen levels initially and also after smoking discontinuation. References

#31
karolinum.cz 2014-01-25 | How Smoking Cessation Influence Hormonal Levels in Postmenopausal Women?

The increase in androgen production in women smokers throughout life from puberty to menopause has been described in studies consistently (Van Voorhis et al., 1992; Barbieri et al., 2005; Manjer et al., 2005; Cochran et al., 2008; Cupisti et al., 2010). … Conclusion Smoking causes higher androgen levels in women.… Mailing Address: Michaela Dušková, MD., PhD., Institute of Endocrinology, Národní 8, 116 94 Prague 1, Czech Republic; Phone: +420 224 905 280; e-mail: mduskova@endo.cz Introduction The negative impact of tobacco smoking is complex. However, it influences biosynthesis and steroids effects among others. Smoking interferes with neuroactive steroid metabolism and addiction arises very quickly. Smoking in women has an anti-estrogenic effect. The increase in androgen production in women smokers throughout life from puberty to menopause has been described in studies consistently (Van Voorhis et al., 1992; Barbieri et al., 2005; Manjer et al., 2005; Cochran et al., 2008; Cupisti et al., 2010). However, anti-estrogenic effect has not been confirmed in all studies. A number of studies have focused on the impact of smoking on female reproduction. They have reported increased incidence of infertility in women smokers (Thomford and Mattison, 1986; Weigert et al., 1999). In fertile women, smoking may also influence hormonal contraception effects negatively: this may lead to higher incidence of off-cycle spotting and bleeding (Rosenberg et al., 1996). … daughters’ smoking, however prenatal cotinine levels did not. The testosterone level in mothers smokers is probably a risk factor for daughters’ smoking (Kandel and Udry, 1999). It seems that a higher testosterone level could be a predisposition for smoking. Another theory is a chronic effect on steroidogenesis caused by smoking which produces irreversible changes in steroidogenesis. Their extent could play a role in maintaining dependence. Conclusion Smoking causes higher androgen levels in women. Our results indicate that smoking discontinuation leads to their further increase. There are several hypotheses explaining elevated levels of androgens after smoking cessation. We considered the influence of nicotine in nicotine replacement therapy. However levels of cotinine, which reflects nicotine income, do not correlate with levels of androgens. Neither gaining weight nor ageing process was associated with androgen levels. The question is what androgen levels women have before they …

#32
escholarship.org 2022-10-26 | A Systematic Review and Meta-Analysis of Smoking and Circulating Sex Hormone Levels Among Premenopausal Women

This meta-analysis suggests that smoking may increase blood androgen levels in healthy premenopausal women which may increase breast cancer risk; however, the differences were modest.… RESULTS: Nineteen published peer-reviewed articles were included. Significantly increased testosterone levels among smokers compared to nonsmokers were identified from cross-sectional studies with varied menstrual phase timing (SMD 0.14; 95% CI 0.0005, 0.29) and significantly increased dehydroepiandrosterone-sulfate levels were found over all phases (SMD 0.12; 95% CI 0.01, 0.22). However, substantial heterogeneity existed in these studies. CONCLUSIONS: This meta-analysis suggests that smoking may increase blood androgen levels in healthy premenopausal women which may increase breast cancer risk; however, the differences were modest. Larger and covariate-adjusted studies with standardized collection over the menstrual cycle are needed to better understand this relationship and to reduce heterogeneity. IMPLICATIONS: Existing research has described associations between high prediagnostic estradiol and androgen levels with breast cancer risk among premenopausal women and has established active smoking as a breast cancer risk factor. …

#33
pmc.ncbi.nlm.nih.gov 2012-05-02 | The endocrine effects of nicotine and cigarette smoke

Cigarette Smoking and Endogenous Sex Hormones in Postmenopausal Women.… Endocrinology. 2011;152(3):836-846. doi:10.1210/en.2010-0855. - B. Conte‐Devolx, Charles Oliver, Pierre Giraud, P. Gillioz, Elias Castanas, Jean‐Claude Lissitzky, et al. Effect of nicotine on in vivo secretion of melanocorticotropic hormones in the rat. Life Sciences. 1981;28(9):1067-1073. doi:10.1016/0024-3205(81)90755-4. - Judith S. Brand, Mei-Fen Chan, Mitch Dowsett, Elizabeth Folkerd, Nicholas J. Wareham, Robert Luben, et al. Cigarette Smoking and Endogenous Sex Hormones in Postmenopausal Women. The Journal of Clinical Endocrinology & Metabolism. 2011;96(10):3184-3192. doi:10.1210/jc.2011-1165. - L. EVERETT SEYLER, Joanne B. Fertig, Ovide F. Pomerleau, Dorothy Hunt, Karen M. Parker. The effects of smoking on acth and cortisol secretion. Life Sciences. 1984;34(1):57-65. doi:10.1016/0024-3205(84)90330-8. - Ryuichi Kawamoto, Yasuharu Tabara, Katsuhiko Kohara, Tetsuro Miki, Masanori Abe, Tomo Kusunoki, et al. …

#34
researchgate.net 2024-06-14 | Cigarette smoking and testosterone in men and women: A systematic review and meta-analysis of observational studies

In 6 studies of 6089 women, mean age 28-62years, smoking was not clearly associated with testosterone (0.11nmol/L, 95% CI -0.08 to 0.30). … Among the few studies that have examined the role of testosterone in female smoking behavior, 18 higher concentrations of testosterone have been found in premenopausal smokers relative to former female smokers and nonsmokers. 19 This pattern holds true for postmenopausal smokers, with higher levels of testosterone in current versus never smokers, which was associated with the number of cigarettes smoked per day.… Two reviewers independently searched, selected, assessed quality and abstracted with differences resolved by consensus or reference to a third reviewer. The initial search yielded 2881 studies; 28 met the selection criteria. In 22 studies of 13,317 men, mean age 18-61years, smokers had higher mean testosterone than non-smokers (1.53nmol/L, 95% confidence interval (CI) 1.11 to 1.96) using a random effects model with inverse variance weighting. In 6 studies of 6089 women, mean age 28-62years, smoking was not clearly associated with testosterone (0.11nmol/L, 95% CI -0.08 to 0.30). Fixed effects models provided similar results, but suggested a positive association in women. Whether products which raise cotinine, such as e-cigarettes or nicotine replacement, also raise testosterone, should be investigated, to inform any regulatory action for e-cigarettes, which emit nicotine into the surrounding air, with relevance for both active and passive smokers. ResearchGate Logo **Discover the world's research** * 25+ million members * 160+ million publication pages … Conclusions The current results indicate several effects for waterpipe smoking dependence on smoking topography. Many of these differences were gender dependent with men having higher exposure than women in most aspects. View Show abstract ... 17 Regarding testosterone, smoking is associated with higher testosterone levels; however, the specific association among women smokers remains unclear and is understudied.18Among the few studies that have examined the role of testosterone in female smoking behavior, 18 higher concentrations of testosterone have been found in premenopausal smokers relative to former female smokers and nonsmokers. 19 This pattern holds true for postmenopausal smokers, with higher levels of testosterone in current versus never smokers, which was associated with the number of cigarettes smoked per day. ... ... 17 Regarding testosterone, smoking is associated with higher testosterone levels; however, the specific association among women smokers remains unclear and is understudied. 18 Among the few studies that have examined the role of testosterone in female smoking behavior,18higher concentrations of testosterone have been found in premenopausal smokers relative to former female smokers and nonsmokers. …

Debate

Two AI advocates debated this claim using the research gathered.

Argument for

P
Proponent Argues TRUE

Multiple studies consistently demonstrate that smoking increases androgen levels in women across different life stages, with Source 1 showing significantly higher levels of adrenal androgens like dehydroepiandrosterone sulfate and androstenedione in postmenopausal smokers compared to nonsmokers, including a clear dose-response relationship. Furthermore, Source 8 confirms through a systematic review and meta-analysis that healthy premenopausal women who smoke also exhibit significantly increased testosterone and dehydroepiandrosterone-sulfate levels, establishing a robust link between smoking and elevated androgens in females.

O
Opponent Rebuttal

The Proponent conflates cross-sectional differences between smokers and nonsmokers with causation: Source 1 establishes an association in a narrow postmenopausal sample, not that smoking itself increased those hormones. The Proponent also overstates Source 8, whose authors characterize the effects as modest and substantially heterogeneous and explicitly call for larger covariate-adjusted, cycle-standardized studies; the broader 2016 meta-analysis found no clear testosterone association in women (Source 17).

Argument against

O
Opponent Argues FALSE

The categorical causal claim is unsupported: the 2016 systematic review found smoking was not clearly associated with testosterone in women (95% CI crossed zero; Source 17), while a controlled endocrine study found no significant differences in testosterone, androstenedione, or DHEAS and concluded smoking did not alter androgen production or metabolism (Source 20). Even the 2022 female-specific meta-analysis reports only modest, heterogeneous cross-sectional associations and calls for larger covariate-adjusted, cycle-standardized studies (Source 15), so it cannot establish that smoking increases androgen levels in women.

P
Proponent Rebuttal

The Opponent cherry-picks an outdated 1988 study (Source 20) and a limited 2016 review (Source 17) while ignoring the more recent, comprehensive 2022 meta-analysis (Source 15) that analyzed 19 articles and confirmed significantly increased testosterone and DHEAS levels in female smokers. Furthermore, their argument fails to account for the established dose-response relationship between cigarette consumption and elevated adrenal androgens demonstrated in multiple robust studies, such as Source 1 and Source 12, which clearly indicates that smoking actively drives this androgenic profile.

Panel Review

3 reviewers assessed the evidence and the arguments.

Reviewer A · Claude

Mostly True
7/10

Multiple independent, high-quality studies including a randomized cross-sectional NEJM study (1), several postmenopausal cohort studies (9,11,12,18,19), premenopausal studies (4,5,6), and two independent systematic reviews/meta-analyses (8/15/32, 17) show smoking is associated with higher androgen levels (testosterone, DHEAS, androstenedione) in women. The 2022 meta-analysis (8/15) found statistically significant but modest increases in testosterone and DHEAS across premenopausal women, while the 2016 meta-analysis (17) found no clear association in women (CI crossed zero), and a few older studies (20,27) found no significant differences. The evidence is broadly consistent with an association but the word 'increases' implies a causal, well-established effect, whereas most evidence is observational and the association is described as 'modest' with 'substantial heterogeneity.' The weight of evidence favors the claim but with important caveats about strength and causality.

Source issues

  • Sources 2,22,25,30,31 are republications of the same Jandikova et al. study, not independent.
  • Source 17/34 report null association in women (wide CI crossing zero), showing evidence is not unanimous.

Evidence gaps

  • Most studies are cross-sectional/associational, not designed to establish causation, so 'increases' overstates causal certainty.
  • Effect sizes in meta-analyses (8,15) are described as modest with substantial heterogeneity.

Precision issues

  • The claim uses the causal verb 'increases' though most evidence is associative (correlational) rather than experimentally causal.
  • The claim does not specify menopausal status, though effects differ notably between pre- and postmenopausal women.

Reviewer B · GPT

Mixed
6/10

The highest-quality direct studies report higher concentrations of some androgens among women who smoke, including a dose-response association for DHEAS and androstenedione in postmenopausal women in Source 1. The female-specific 2022 meta-analysis found modest increases in testosterone and DHEAS but substantial heterogeneity and described the result as suggesting that smoking may increase androgen levels, while the 2016 meta-analysis found no clear testosterone association in women [15, 17]. These sources bear directly on smoking and circulating androgens in women, but they are chiefly observational and do not establish the unqualified causal wording "increases"; conflicting null findings also remain [20]. The claim is therefore directionally supported as an association but overstated as a settled causal generalization, making it Mixed.

Source issues

  • Sources 8, 15, and 32 are versions of the same 2022 meta-analysis and are not independent evidence.
  • Sources 17 and 34 are versions of the same 2016 meta-analysis and are not independent evidence.
  • Many primary studies and both meta-analyses are observational, so residual confounding and selection differences between smokers and nonsmokers remain possible.

Evidence gaps

  • No randomized or otherwise strong causal evidence in the pool establishes that smoking itself causes higher androgen levels across all women.
  • The evidence varies by menopausal status, menstrual-cycle timing, hormone measured, and hormonal-contraceptive use, limiting an unqualified statement about women generally.

Precision issues

  • The verb "increases" states causation more strongly than the predominantly observational evidence licenses.
  • The unqualified plural "androgen levels" and population term "women" obscure heterogeneous results across specific androgens and female subgroups.

Reviewer C · Gemini

Mostly True
8/10

Multiple reliable sources, including a 2022 meta-analysis (Sources 8, 15) and several clinical studies (Sources 1, 4, 7), establish that smoking is associated with elevated androgen levels, such as androstenedione and DHEAS, in both pre- and postmenopausal women. While one 2016 meta-analysis found no clear association specifically for testosterone in women (Source 17), the broader category of androgens is consistently elevated in female smokers, often demonstrating a dose-response relationship (Source 1). The claim's causal wording is generally supported by the literature, though some sources note the differences are modest and primarily derived from cross-sectional data.

Source issues

  • Sources 8, 15 and 32 are the same 2022 meta-analysis.
  • Sources 2, 22, 25, 30 and 31 are the same study on smoking cessation.

Precision issues

  • The claim uses the causal verb 'increases', which is supported by some dose-response data but heavily relies on cross-sectional associations where confounding factors like BMI may play a role.

Panel summary

Multiple clinical studies and a 2022 systematic review and meta-analysis associate smoking with modestly higher testosterone, DHEAS, or androstenedione levels in women, including dose-response findings in some postmenopausal populations. This direct evidence supports the claim's overall direction across both premenopausal and postmenopausal groups. However, most studies are observational, results vary by androgen and population, and a 2016 meta-analysis found no clear testosterone association in women. The main disagreement concerns whether “increases” improperly presents an association as causation. Because the broader evidence favors higher androgen levels while leaving causal certainty and universality unresolved, the claim is mostly accurate rather than fully established.

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The claim is
Mostly True
Score: 7/10
Confidence: 4/10 Spread: 2 pts

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Mostly True · Lenz Score 7/10 Lenz
“Smoking increases androgen levels in women.”
34 sources · 3-panel audit · Verified Sep 2026
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