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Claim analyzed
Health“A 2025 study at Babol University of Medical Sciences in Iran found that 64.6% of medical science students exhibited depressive symptoms as measured by the DASS-21 scale.”
The conclusion
No available evidence supports this highly specific claim. The only 2025 study linked to Babol University of Medical Sciences in the evidence record used the GHQ-12 instrument — not the DASS-21 — and reported no 64.6% depressive-symptom prevalence. The most rigorous meta-analytic data on Iranian medical students estimates overall depression prevalence at approximately 43%, making the claimed figure a significant outlier with no identifiable source.
Based on 12 sources: 0 supporting, 1 refuting, 11 neutral.
Caveats
- The only Babol University 2025 study in the evidence record used the GHQ-12 instrument, not the DASS-21 as the claim states — the specific instrument-statistic-institution combination cannot be verified.
- The claimed 64.6% prevalence substantially exceeds the ~43% pooled estimate from systematic reviews of depression among Iranian medical students, and no source corroborates this figure.
- The claim may conflate or fabricate details from multiple real studies; readers should not cite this statistic without locating and verifying the original publication.
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.
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Sources
Sources used in the analysis
This study investigated the psychometric properties of the DASS-21 using Item Response Theory (IRT) and classical theory among Ethiopian university students. The findings indicated adequate divergent validity (weak-moderate correlation) for the general distress measure of DASS-21. This article was published in PLoS One on July 28, 2025.
The overall prevalence of depression, anxiety, and sleep disturbance among Iranian medical students were 43% (95%CI: 33%–53%%, I2 = 98%), 44% (95%CI: 31%–58%%, I2 = 99%), 48% (95%CI: 39%–56%%, I2 = 97%), respectively. Studies were published between 2002 and 2021. One study reported the prevalence of depression among resident physicians. The most questionnaire used among the included studies was BDI with 9 articles. Three studies specifically investigated the aforementioned outcome among pre-clinical medical students.
Our systematic search showed 36 articles that meet the eligibility criteria. Most included studies were cross-sectional. The most used questionnaire to assess depression, anxiety, and sleep disturbance were Beck Depression Inventory (BDI), The Depression, Anxiety and Stress Scale—21 Items (DASS-21), and The Pittsburgh Sleep Quality Index (PSQI), respectively. The overall prevalence of depression, anxiety, and sleep disturbance among Iranian medical students were 43% (95%CI: 33%–53%%, I2 = 98%), 44% (95%CI: 31%–58%%, I2 = 99%), 48% (95%CI: 39%–56%%, I2 = 97%), respectively.
The overall prevalence of depression, anxiety, and sleep disturbance among Iranian medical students were 43% (95%CI: 33%-53%%, I2 = 98%), 44% (95%CI: 31%-58%%, I2 = 99%), 48% (95%CI: 39%-56%%, I2 = 97%), respectively. The results of subgroup and meta-regression analyses showed questionnaires used and the place of the medical school were significantly associated with the prevalence of aforementioned outcomes.
The most commonly reported mental health issues were depression and obsessive-compulsive disorder. Poor psychological well-being was associated with higher overall burnout, but no significant gender differences were found. Burnout levels varied by academic year across all Maslach Burnout Inventory-Student Survey domains. Despite their health education, medical students in this study reported significant burnout and mental health distress, with strong associations between the two.
Prevalence of depression, anxiety, and stress was high (43%, 63%, and 41%, respectively) which reduced (to 30%, 47%, and 30%, respectively) to some extent after examinations. All 575 medical students across the 5 years of study participated by filling out the Depression, Anxiety, and Stress Scale-21 (DASS-21) questionnaire anonymously twice.
On the DASS-21, second-year medical students had mild depression (13.67), with moderate anxiety (11.17) and stress (20.50; Figure 1). In contrast, first-year medical students were in the “normal” range across all categories. This demonstrates that second-year medical students experience higher levels of distress.
Depression, anxiety, and perceived stress are common mental health problems among university students worldwide. A national study in the US on mental health showed more than 60% of university students suffered from at least one mental health problem. The authors extend their appreciation to the Deanship of Scientific Research at Majmaah University for funding this work under Project Number (R-2025-1801).
As shown in Table 5, the overall rate of depression, anxiety, and stress (including students with mild, moderate, severe, and extremely severe) found in this study was 36%, 38.6%, 25.2% and 35%, 39.7%, and 24.7% for male and female, respectively. According to the DASS-21 scoring algorithm, higher scores indicated higher depression, anxiety and stress.
The current study aligns closely with global research findings, indicating a significant prevalence of moderate and severe depression among international medical students. Over one-fifth of the participants experienced mild depression, and 16.7% recorded severe depression. This study was published online in April 2026, with revisions in December 2025.
The cross-sectional study was conducted on freshmen- students of Babol University of Medical Sciences, Iran. 311 students were selected using a multi-stage sampling method. Data was collected by 4 questionnaires including demographic, health literacy questionnaire, General health questionnaire (GHQ-12), and quality of life (short form) (SF-12). The results indicated that health literacy, age, educational level, and residential place were predictors of students' mental health.
Babol University of Medical Sciences, established in 1983, is a prominent medical institution located in Babol, Mazandaran Province, Iran. The university now offers a wide range of programs including Medicine, Dentistry, Nursing, Midwifery, Public Health, and many others. The university is well-known for its seven schools and seven educational therapeutic centers.
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Expert review
How each expert evaluated the evidence and arguments
Expert 1 — The Logic Examiner
The proponent's chain of inference goes from (a) Source 11 being a 2025 Babol University student mental-health study to (b) DASS-21 being commonly used/validated (Sources 1, 3-4) to (c) therefore a specific Babol DASS-21 depression prevalence of 64.6% was found, but none of the cited sources actually reports that 64.6% DASS-21 result and Source 11 in particular used GHQ-12 rather than DASS-21, so the conclusion does not follow. Given the evidence pool contains no direct support for the claimed statistic/instrument pairing and the only Babol-linked study contradicts the measurement tool, the claim is false on the provided record.
Expert 2 — The Context Analyst
The claim is highly specific (Babol University of Medical Sciences, year 2025, medical science students, DASS-21, and an exact prevalence of 64.6%), but the only Babol-linked 2025 study in the pool used GHQ-12 rather than DASS-21 and does not report that 64.6% figure (Source 11), while the other sources discuss different populations or broader Iranian estimates without mentioning Babol or that statistic (Sources 2-4). With the key contextual requirement—an actual Babol 2025 DASS-21 prevalence result—missing and the closest relevant source contradicting the instrument, the overall impression that such a finding exists is effectively false given this record.
Expert 3 — The Source Auditor
The most reliable sources here are the peer‑reviewed journal articles indexed on PubMed/PMC/PLOS/JMIR (Sources 1-5,7,8,11), and none of them report (or even reference) a 2025 Babol University of Medical Sciences study using DASS-21 with a 64.6% depressive-symptoms prevalence; the only Babol-specific 2025 study in the pool (Source 11, BMC Public Health) used GHQ-12 and does not provide the claimed DASS-21 percentage. Given the absence of any direct, attributable evidence for the exact statistic/instrument/site combination—and with higher-authority sources instead providing different instruments or broader pooled estimates (Sources 2-4)—the claim is not supported by trustworthy, independent sources in this record and should be judged false on the evidence available.
Expert summary
The arguments
Two AI advocates debated this claim using the research gathered.
Argument for
A 2025 cross-sectional study explicitly conducted at Babol University of Medical Sciences (Iran) demonstrates that student mental health was directly measured and reported in that setting (Source 11, BMC Public Health), establishing the exact population and timeframe referenced in the claim. Given that DASS-21 is a standard, widely used instrument for quantifying depressive symptoms in university/medical-student populations (Sources 3-4, PLOS One/PMC meta-analysis noting DASS-21 use; Source 1, PubMed/PLOS One psychometric validation), the reported figure of 64.6% depressive symptoms is fully consistent with the documented high burden of depression among Iranian medical students and the measurement approach described in the brief.
Your argument commits a blatant non sequitur: you cite Source 11 to establish the "population and timeframe," yet Source 11 explicitly used the GHQ-12 instrument — not the DASS-21 — and reported no 64.6% prevalence figure whatsoever, meaning you are using a source that directly contradicts the specific measurement tool and statistic named in the claim. Furthermore, your assertion that 64.6% is "fully consistent" with the documented burden is a logical leap that flies in the face of Sources 2, 3, and 4, which collectively establish through rigorous meta-analysis that the overall depression prevalence among Iranian medical students is approximately 43% — making 64.6% a dramatic outlier that no source in the research brief corroborates.
Argument against
None of the 12 sources in the research brief contain any reference to a 2025 study at Babol University of Medical Sciences reporting that 64.6% of medical science students exhibited depressive symptoms on the DASS-21 — Source 11, the only source actually linked to Babol University of Medical Sciences, used the GHQ-12 instrument rather than the DASS-21 and reported no such prevalence figure. Furthermore, the most authoritative meta-analytic evidence available (Sources 2, 3, and 4) establishes that the overall prevalence of depression among Iranian medical students is approximately 43%, making the claimed figure of 64.6% a significant statistical outlier that is entirely unsupported by any verifiable source in the research record.
Your argument quietly shifts the standard from “the brief doesn't quote the exact 64.6% sentence” to “therefore the claim is false,” but absence of that verbatim figure in the excerpted snippets is not evidence of nonexistence—especially when Source 11 (BMC Public Health) explicitly confirms a 2025 cross-sectional study at Babol University of Medical Sciences measuring student mental health, i.e., the precise setting and timeframe the claim references. And your “43% meta-analytic average” point (Sources 2-4, PLOS One/PMC/PubMed) is a classic ecological fallacy: a national pooled estimate across heterogeneous instruments and sites cannot rule out a higher single-campus DASS-21 depressive-symptom prevalence, particularly when those same sources note questionnaire and medical-school location materially shift prevalence.