Health.

“Dimethyl sulfoxide (DMSO) has anti-inflammatory effects in humans.”

Evidence supports that DMSO can reduce inflammatory markers in human-derived systems and has some human clinical evidence consistent with anti-inflammatory activity. The main limitation is that the strongest support comes from ex vivo and mechanistic studies, while clinical trials are smaller, mixed, and condition-specific. So the general claim is supported, but it overstates how firmly clinical benefit has been established in living patients.

“Cashiers are at increased risk of disease due to exposure to chemicals from handling thermal paper receipts.”

The evidence supports higher bisphenol exposure in cashiers who handle thermal receipts, but it does not clearly show that this exposure has translated into higher rates of disease in cashiers. The claim overstates what is established. A more accurate formulation is that receipt handling can increase exposure to chemicals of health concern, while the cashier-specific disease risk remains uncertain.

“COVID-19 vaccines did not help contain the COVID-19 pandemic.”

The claim is not supported by the evidence. Multiple high-quality studies and public health datasets show COVID-19 vaccines reduced infection and transmission in important periods, and consistently lowered hospitalization and death. That means they helped contain the pandemic’s spread and impact, even though they did not eliminate COVID-19 or work equally well against every variant.

“Red blood cells are effective carriers of anticancer drugs, as demonstrated by recent scientific studies.”

Recent studies do support red-blood-cell-based systems as promising anticancer drug carriers. Multiple peer-reviewed papers show improved delivery and, in some animal tumor models, better efficacy or lower toxicity. The key caveat is that most of this evidence is preclinical, so the claim should not be read as proof of established effectiveness in human cancer care.

“Having greater muscle mass makes it easier for the body to eliminate estrogen.”

The evidence does not support muscle mass as a meaningful driver of estrogen elimination. Estrogen is cleared mainly through liver metabolism and biliary/renal excretion, while muscle-related studies describe local hormone activity within muscle rather than whole-body clearance. Exercise can be associated with lower estrogen in some contexts, but that is more consistently tied to reduced fat mass than to having more muscle.

“Type 2 diabetes is often preventable.”

Authoritative medical evidence supports this claim. Major health bodies state that type 2 diabetes can often be prevented or delayed, particularly in people at higher risk, through lifestyle changes such as healthier eating, regular physical activity, and weight loss. The claim does not imply every case is preventable, and that limitation is consistent with the evidence.

“Having a normal semen analysis is necessary but not sufficient for male fertility.”

The evidence does not support the claim as stated. A normal semen analysis does not guarantee male fertility, but it is also not required for fertility: men with abnormal semen parameters can still achieve pregnancy. Major medical guidance treats semen analysis as a useful screening tool with limited predictive power, not as a necessary condition for conception.

“COVID-19 originated from a laboratory in China.”

Available evidence does not establish that COVID-19 originated from a Chinese laboratory. Scientific reviews and WHO-linked assessments continue to find zoonotic spillover better supported, while lab-origin arguments rely mainly on circumstantial facts and divided, low-confidence intelligence judgments rather than direct evidence. A lab incident cannot be fully ruled out, but stating it as fact goes beyond what the evidence supports.

“Artificial intelligence systems are used in clinical practice to assist with medical imaging diagnosis, such as detecting cancers on radiology images.”

AI tools are already used in real clinical radiology settings to help detect or assess findings on medical images, including some cancer-related applications. The strongest evidence comes from government, peer-reviewed, and specialty-society sources describing FDA-cleared systems used as decision-support or second-reader tools. The main caveat is that use is uneven and these systems usually assist clinicians rather than diagnose on their own.

“Dr. Claudia Arias is affiliated with the National University of Córdoba as a forensic psychology researcher.”

The evidence does not support that Claudia Arias is a forensic psychology researcher at the National University of Córdoba. Reliable UNC-linked sources point to a Claudia Vanina Arias in plant biology or agricultural sciences, while psychology-related references appear to concern different individuals or other institutions. The claim’s central forensic-psychology affiliation is unsubstantiated.

“Asian ginseng (Panax ginseng) has stimulant effects on the central nervous system.”

Evidence supports that Panax ginseng can exert stimulant-type effects on the central nervous system. Peer-reviewed reviews and some human studies report neurotransmitter modulation, improved attention or reaction time, and insomnia or alerting effects in some users. Its overall action is broader than simple stimulation, but that does not negate the presence of stimulant effects.

“In people with gastrointestinal cancer, gastrointestinal bleeding is commonly caused by bleeding from the tumor.”

Tumor bleeding is an important cause of gastrointestinal bleeding in some patients with gastrointestinal cancer, especially those with luminal tumors and overt bleeding, but the broad claim overstates the evidence. Strong reviews indicate that many bleeding episodes in cancer patients still arise from non-tumor causes such as ulcers, diverticulosis, or hemorrhoids. The statement needs a narrower scope to be reliable.

“Among students, procrastination is associated with lower academic performance, such as lower grades or grade point average (GPA).”

The evidence supports a real overall link between student procrastination and lower grades or GPA. Multiple reviews and meta-analytic findings show that higher academic procrastination is generally associated with worse academic performance, though the effect is usually modest rather than large. Some specific subtypes or samples show weak, null, or even positive results, so the pattern is not universal.

“Parasympathetic nervous system fibers have a craniosacral origin, arising from the brainstem and from sacral spinal cord segments S2–S4.”

Standard anatomy sources support the claim’s central point: parasympathetic outflow is conventionally taught as craniosacral, arising from brainstem nuclei and sacral segments S2-S4. The main caveats are that this description applies most precisely to preganglionic parasympathetic outflow, not all parasympathetic fibers, and that some modern research disputes whether the sacral outflow should be labeled parasympathetic at all.

“In 2024, M. Alnefaie, W. K. Abdelbasset, and R. Alotaibi published a narrative review titled "The impact of the menstrual cycle on speed, strength, and endurance in female athletes."”

The claimed publication is not supported by the available indexed evidence. Sources in the record show related reviews and a 2024 Alnefaie article on similar performance variables, but that paper is not a narrative review and does not have the stated title or co-authors. No reliable bibliographic source confirms the exact publication described.

“An article titled "Mental health awareness among Malaysian university students" by A. Bashir and S. Hassan was published in 2022.”

No reliable database evidence supports the existence of a 2022 article with that exact title and author pair. The evidence instead points to a 2020 doctoral thesis by Anam Bashir, supervised by Sheikha Hassan, with a different title. The claimed 2022 article appears to be a miscitation of that thesis, not a real publication.

“If you pluck a gray hair, it will grow back as a gray hair.”

In most cases, a plucked gray hair regrows gray because plucking does not reset the follicle’s pigment system. The follicle’s melanocyte status determines the color of the next hair. The statement is slightly overstated because rare repigmentation can happen, and repeated plucking can damage follicles or affect regrowth.

“Stepping into a lit fireplace will result in being burned.”

For an ordinary person, entering an active fireplace would cause thermal injury very quickly. Medical and safety sources agree that open flames, embers, and intensely heated surfaces in a lit fireplace can burn skin within seconds. The exact severity depends on exposure time and protection, but the core claim is supported.

“The prevalence of depression among university students in Lima Norte, Lima, Peru, is higher than the prevalence of depression among university students in other parts of Lima, Peru.”

The claim is not supported by the available evidence. Existing studies show depression among university students in Lima Norte, but no reliable study directly compares Lima Norte with other parts of Lima using the same population, instrument, and time frame. Cross-study comparisons from different universities and methods cannot establish that Lima Norte has a higher prevalence.

“Massaging lemon juice on a scar for about 10 minutes two to three times per week lightens the skin and helps remove old scars.”

The evidence does not support lemon juice as a reliable way to lighten or remove old scars. Research on scars favors other treatments, while studies on AHAs or topical vitamin C involve standardized formulations, not raw lemon juice. Citrus can also irritate skin and cause phototoxic reactions that may worsen discoloration.