384 Health claim verifications avg. score 4.8/10 122 rated true or mostly true 253 rated false or misleading
“Wearing sunscreen with SPF is recommended for skincare and skin protection even when indoors.”
The claim is partially true but misleadingly broad. Reputable medical sources like MD Anderson and Keck Medicine of USC do recommend sunscreen indoors — but specifically when you spend prolonged time near windows, since UVA rays can penetrate glass. However, Cancer Council Australia and other authorities say indoor sunscreen is "typically" unnecessary because overall UV exposure indoors is low. The blanket phrasing "even when indoors" overstates what is actually a conditional recommendation tied to window proximity, skin conditions, and exposure duration.
“Supplements that activate the telomerase enzyme are safe for human use.”
This claim significantly overstates the evidence. While a few small, short-term clinical trials (6–12 months) of specific supplements like TA-65 reported no serious adverse effects, the best available systematic review explicitly states that long-term cancer risk and chronic toxicity remain unaddressed, and a 12.4% treatment-emergent adverse-event rate was observed. Mechanistic and epidemiological evidence also links telomerase activation with cancer risk. Declaring these supplements broadly "safe for human use" is not supported by current science.
“Drinking coffee causes dehydration in humans.”
This claim is false. The scientific consensus, supported by peer-reviewed meta-analyses and major health authorities like the NHS, is clear: moderate coffee consumption does not cause dehydration in healthy adults. Coffee's mild diuretic effect is transient and far outweighed by the water content of the beverage itself. The only studies showing negative fluid balance used extreme caffeine doses in caffeine-deprived subjects—conditions irrelevant to normal coffee drinking. Regular consumers develop tolerance to caffeine's diuretic effects.
“Flushing prescription medications down the toilet is the safest method of disposal.”
This claim is false. Every major health and environmental authority — including the EPA, CDC, FDA, and MedlinePlus — identifies drug take-back programs as the safest disposal method for prescription medications, not flushing. Flushing is only recommended for a small subset of high-risk drugs (primarily opioids) on the FDA's "Flush List," and only when take-back options are unavailable. For the vast majority of prescriptions, flushing is actively discouraged because it contaminates waterways and drinking water.
“Eating spicy food can cause stomach ulcers.”
This claim is false. Modern medical evidence overwhelmingly shows that stomach ulcers are caused by H. pylori bacterial infection and NSAID use — not by spicy food. Major institutions including the NIDDK, Cleveland Clinic, and Yale Medicine explicitly reject the spicy-food-causes-ulcers myth. Peer-reviewed research actually shows capsaicin (the active compound in spicy food) may be gastroprotective. While spicy food can worsen symptoms in someone who already has an ulcer, it does not cause ulcers.
“Anorexia is classified as a mental health condition.”
Yes. In common usage, “anorexia” refers to anorexia nervosa, which major health authorities (e.g., WHO, NHS, NIMH) classify as a mental disorder/mental health condition. The only caveat is terminology: “anorexia” can also mean loss of appetite (a symptom), which is not itself a mental health diagnosis.
“Fasting is not recommended for women over the age of 50.”
This claim is false. No major health organization or clinical guideline issues a blanket recommendation against fasting for all women over 50. While some medical literature cautions against fasting in "advanced age" or the "elderly," these terms are not defined as starting at 50. Multiple authoritative sources — including the Cleveland Clinic, peer-reviewed PMC studies, and Harvard Health — indicate intermittent fasting can be safe and potentially beneficial for postmenopausal women when approached with medical guidance and individualized assessment.
“The use of weight-loss drugs such as Ozempic and Wegovy will significantly impact public health outcomes by 2036.”
The claim is largely supported. High-quality peer-reviewed studies project that GLP-1 drugs like Ozempic and Wegovy could avert tens of thousands of deaths annually and prevent over a million cardiovascular events within the 2036 timeframe. Clinical efficacy is well-established, and early population-level signals are emerging. However, these projections depend on expanded access, sustained adherence, and affordability improvements that are not yet guaranteed — and high costs and coverage gaps could limit who benefits and worsen health disparities.
“Regular consumption of ultra-processed foods significantly increases the risk of developing dementia.”
There is a real association between high ultra-processed food intake and dementia risk in several large observational studies and meta-analyses (pooled RR ≈1.44). However, the claim overstates the evidence in key ways: the underlying studies are observational (not proving causation), the pooled estimate has extreme statistical heterogeneity (I²≈97%), newer studies find no association for total UPF intake, and "regular consumption" is vaguer than the "high vs. low" comparisons actually studied. The link is plausible but not as settled or causal as the claim implies.
“Drinking eight glasses of water per day is the optimal daily water intake for human health.”
This claim is false. No scientific evidence supports "eight glasses of water per day" as the optimal intake for human health. The National Academies explicitly state there is no single daily water requirement, and a peer-reviewed review in the American Journal of Physiology found zero studies backing the "8×8" rule. Actual water needs vary significantly by sex, body size, activity level, climate, and diet, and roughly 20–30% of daily water intake comes from food. Every major health authority rejects this as a myth.
“Stretching before exercise prevents muscle soreness and injuries.”
This claim is not supported by the best available evidence. Multiple high-quality systematic reviews, including a 2022 Cochrane review, consistently find that stretching before exercise does not produce clinically meaningful reductions in muscle soreness (DOMS) and does not significantly reduce general injury risk. While some newer research suggests specific stretching types (e.g., individualized active stretching) may help in narrow contexts, these tentative findings do not support the broad, blanket claim as stated.
“The human stomach can dissolve razor blades through its digestive acids.”
This claim is false as commonly understood. While stomach acid (pH ~1–2) is highly corrosive and can slowly corrode metal in laboratory settings — one study showed ~37% mass loss after 24 hours in simulated gastric juice — food and foreign objects typically remain in the stomach for only 30–120 minutes. Medical case reports consistently show ingested razor blades passing through or being surgically removed intact, not dissolved. The claim conflates a lab demonstration of slow corrosion with actual digestive capability.
“ADHD is overdiagnosed in adults in recent years.”
Adult ADHD diagnoses have clearly risen in recent years — about 6% of U.S. adults reported a current diagnosis in 2023, with many first diagnosed in adulthood. Some experts have raised legitimate concerns about diagnostic validity and possible overdiagnosis. However, the claim states overdiagnosis as established fact, which the evidence does not support. Rising diagnoses may reflect correction of longstanding underdiagnosis, particularly in women and minorities, and some studies show stable underlying prevalence. The claim conflates increased diagnosis with proven overdiagnosis.
“Reading in low light causes permanent damage to eyesight.”
This claim is a widely debunked myth. Multiple credible medical and optometric sources — including the Canadian Association of Optometrists, Prevent Blindness, and University of Utah Health — confirm that reading in low light may cause temporary eye strain, discomfort, or headaches, but does not cause permanent damage to eyesight. These symptoms resolve with rest. No credible clinical evidence supports the idea that dim-light reading leads to lasting structural harm to the eyes.
“Sexual orientation, specifically being gay, is primarily a result of psychological factors or social influence rather than innate biological factors, and it can be changed.”
This claim is false. The overwhelming scientific and medical consensus — from the APA, NIH, and major research institutions — holds that sexual orientation is substantially influenced by biological, genetic, hormonal, and early developmental factors, not primarily by psychological or social influence. There is no credible evidence that sexual orientation can be durably changed through intervention. Conversion therapy efforts have been found ineffective and linked to serious mental health harms including depression, PTSD, and suicidality.
“Consuming ginger after eating sushi kills most of the parasites that may be present in the sushi.”
This claim is false. While lab studies show ginger compounds can kill certain parasites at specific concentrations, there is no clinical evidence that the small amount of pickled ginger served with sushi achieves parasiticidal effects in humans. Public health authorities consistently identify freezing — not condiments — as the reliable method for controlling parasites in raw fish. The ginger served with sushi is traditionally a palate cleanser, not a food safety measure.
“Blue light emitted from smartphones causes permanent retinal damage.”
This claim is false. While high-intensity blue light can damage retinal cells in laboratory settings, the American Academy of Ophthalmology, Harvard Health, and a 2023 NIH review all state there is no evidence that blue light from smartphones causes permanent retinal damage under normal use. Studies cited in support either used unrealistic exposure intensities, animal models, or showed only statistical associations — not causation. The primary proven harms of prolonged screen use are digital eye strain and sleep disruption, not permanent retinal damage.
“Sugar-free drinks cause cancer in humans.”
The claim that sugar-free drinks cause cancer in humans is not supported by the scientific evidence. The strongest classification any authority has issued — IARC's Group 2B for aspartame — means only "possibly carcinogenic" based on limited, unconvincing evidence. A 2025 umbrella meta-analysis found no significant association between artificially sweetened beverages and cancer risk (RR: 0.98), and a 2025 systematic review found no consistent link for any sweetener or cancer type. The claim overstates uncertain, preliminary signals as established causation.
“Squats are more effective than leg press exercises for muscle hypertrophy.”
The claim that squats are categorically more effective than leg press for muscle hypertrophy is misleading. While one peer-reviewed study found squats superior in an 8-week protocol, the broader scientific evidence indicates that when training volume and intensity are matched, both exercises produce comparable overall muscle growth, with each favoring different muscle regions. Squats recruit more total muscle mass, but this does not automatically translate to greater hypertrophy in any specific muscle group. The blanket claim oversimplifies a nuanced, context-dependent reality.
“Yawning occurs to increase oxygen intake before sleep.”
This claim is false. The idea that yawning exists to increase oxygen intake has been largely abandoned by the scientific community. Controlled experiments show that changing oxygen or CO₂ levels does not affect yawning frequency. While yawning does involve a deep breath, this is not its purpose. Current research points instead to brain cooling, sleep-wake state transitions, and arousal regulation as the primary functions of yawning. The "before sleep" framing adds an additional unsupported specificity.