551 Health claim verifications avg. score 5.1/10 219 rated (mostly) true 266 rated (mostly) false
“Sugar-free soft drinks sweetened with non-sugar sweeteners (for example, Coca-Cola Zero Sugar) are as harmful to teeth as sugar-sweetened soft drinks.”
The evidence does not support a blanket claim of equal dental harm. Sugar-free soft drinks can damage teeth through acid-related enamel erosion at levels that may be similar to sugary soft drinks, but sugar-sweetened drinks also raise cavity risk through fermentable sugars. That extra cariogenic pathway makes sugary drinks generally more harmful overall to teeth.
“Salivary amylase cannot break down starch into glucose because the enzyme molecule is too large.”
The evidence shows salivary amylase does break down starch, just not primarily into free glucose. It begins starch digestion in the mouth by producing smaller sugars such as maltose and dextrins. The stated reason is also wrong: no credible source supports the idea that amylase fails to make glucose because the enzyme molecule is “too large.”
“A height of 6 feet 2 inches is approximately the 95th percentile for adult male height in the United States.”
The claim is well supported by U.S. anthropometric data. CDC/NCHS NHANES references place the 95th percentile for adult U.S. men at about 187.3-187.5 cm, while some related analyses put it near 188 cm. Since 6'2" equals 188.0 cm, describing it as approximately the 95th percentile is accurate.
“Fever can sometimes cure cancer.”
Rare cancer regressions have been reported after high fevers, acute infections, or fever-inducing treatments, so the idea has some factual basis. But the evidence mostly consists of case reports, historical series, and correlations, not proof that fever itself directly cures cancer. In modern medicine, hyperthermia is used as an adjunct to other treatments, not as a reliable stand-alone cure.
“In humans, when not eating, the entire esophagus is completely closed along its full length, so water cannot drip down into the stomach on its own.”
The claim overstates normal esophageal physiology. At rest, the esophagus is usually collapsed and its sphincters are generally closed, which is why swallowing is normally needed. But it is not a completely sealed tube along its entire length, and spontaneous lower sphincter relaxations and small amounts of intraluminal air mean the absolute wording is medically inaccurate.
“Taking 5,000 IU of vitamin D daily does not cause side effects for most people.”
Most adults are unlikely to develop side effects from 5,000 IU of vitamin D daily, and several studies found it was generally well tolerated. But the claim overstates the evidence: 5,000 IU is above the usual adult upper limit of 4,000 IU, and review-level evidence shows a small but real increase in some adverse events at nearby doses. A safer wording would be that side effects are uncommon, not absent.
“A meta-analysis published in 2023 found that taking 3,200 to 4,000 International Units (IU) of vitamin D daily is associated with a higher risk of hypercalcemia.”
The cited 2023 meta-analysis did report that long-term vitamin D supplementation at 3,200-4,000 IU/day was associated with a higher risk of hypercalcemia. The pooled estimate showed a statistically significant increase versus control. Important context is that the absolute excess risk was small and reported cases were often asymptomatic or reversible.
“Organic fruits are healthier than non-organic fruits.”
Organic fruit does appear to reduce pesticide exposure and may have small differences in some nutrients, but the evidence does not show that it is broadly healthier in a clinically meaningful sense. Major reviews generally find little or no consistent nutritional superiority and no strong proof of better health outcomes. The claim overstates a narrower, better-supported benefit.
“Genetically modified (GMO) foods are dangerous to human health because DNA modification in the food can harm human health.”
The evidence does not support the idea that GMO foods are dangerous because their modified DNA harms human health. Reviews from major public-health and scientific bodies consistently find that approved GMO foods are no riskier to eat than comparable conventional foods. The claim also misstates the mechanism: eating DNA, whether modified or not, is not itself shown to damage human 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.