We verify claims ranging from everyday wellness advice on fasting and hydration to complex medical interventions like GLP-1 agonists and pig-kidney xenotransplants.
551 Health claim verifications avg. score 5.1/10 219 rated (mostly) true 266 rated (mostly) false
“Tim Andrews lived with a genetically modified pig kidney for nine months before receiving a deceased-donor human kidney, constituting the first known transition from a pig-kidney xenotransplant to a human kidney transplant.”
The evidence supports both the timeline and the historic characterization. Andrews lived with a genetically modified pig kidney for 271 days—about nine months—and subsequently received a deceased-donor human kidney, the first documented transition of this kind. He underwent roughly three months of dialysis between the two organs, so the transition was not immediate.
“Every person should drink 2 liters of water per day.”
A fixed two-liter drinking target does not apply to everyone. Authoritative recommendations vary by sex, age, activity, climate, health, and other circumstances, and many intake figures include water obtained from food and all beverages. Two liters may be suitable for some adults, but the evidence does not support it as a universal daily requirement.
“Magnetic resonance imaging (MRI) scans cause cancer.”
Available evidence does not support MRI scans as a cause of cancer. Unlike X-rays and CT scans, MRI uses non-ionizing magnetic and radiofrequency fields rather than DNA-damaging ionizing radiation, and no cancer increase from ordinary clinical MRI has been established. MRI has other recognized safety considerations, but they do not substantiate this cancer claim.
“Intermittent fasting is harmful to human health.”
Current evidence does not support characterizing intermittent fasting as generally harmful. Clinical reviews and trial meta-analyses find no overall increase in adverse events and report some weight and cardiometabolic benefits. Risks remain for people who are pregnant, have eating disorders, take certain diabetes medications, or follow fasting regimens without appropriate supervision; long-term evidence is also less certain.
“Coffee consumption causes miscarriage.”
Coffee has not been established as a cause of miscarriage. Moderate caffeine intake—generally under 200 mg per day—has not been shown to raise miscarriage risk, while some observational studies associate higher intake with greater pregnancy-loss risk. Those studies cannot reliably separate caffeine’s effect from other factors and therefore do not prove causation.
“Eating banana peels prevents H1N1 influenza infection.”
Eating banana peels has not been shown to prevent H1N1 influenza infection. The relevant research concerns a molecularly engineered banana-derived lectin tested in laboratory and animal models, not ordinary banana peels consumed by humans. Expert commentary explicitly states that eating bananas has no demonstrated antiviral benefit.
“GLP-1 receptor agonist treatment has numerous side effects, including adverse effects on eyesight.”
GLP-1 treatment can have many side effects, and official safety information documents potential eye complications. The clearest evidence concerns semaglutide, including diabetic-retinopathy complications and very rare NAION, which can cause vision loss. Evidence does not establish the same ocular risk for every GLP-1 drug, and several broad analyses have found no significant overall increase in eye disorders.
“Investigational glucagon-like peptide-1 (GLP-1)/glucose-dependent insulinotropic polypeptide (GIP)/glucagon triple-receptor agonists have a lower rate of serious adverse events than GLP-1 receptor agonist medications.”
Available evidence does not establish that triple-receptor agonists cause fewer serious adverse events than GLP-1 receptor agonists. Reported estimates are generally similar, statistically inconclusive, or based on placebo comparisons rather than direct comparisons with GLP-1 medications. Evidence also comes predominantly from retatrutide studies, so it cannot support a class-wide safety advantage.
“Compounded or unapproved peptide injections pose greater safety risks than approved prescription peptide medications.”
The evidence supports a higher overall safety risk for compounded or unapproved peptide injections than for approved prescription peptide medicines. These products may lack FDA premarket review, standardized manufacturing controls, and verified purity or potency, increasing risks such as contamination and immune reactions. Proper pharmacy compounding is generally safer than gray-market use, but it still does not provide the same assurances as an approved product.
“Red-light therapy causes dark spots on the skin.”
Dark spots are a possible but conditional adverse effect of red-light therapy. The risk appears greater in darker skin tones and with higher exposures, while controlled treatment may instead improve melasma or other pigmentation. Presenting discoloration as a general outcome materially overstates the evidence.
“The American Academy of Dermatology warns that red-light therapy may cause hyperpigmentation in people with darker skin tones.”
Official AAD guidance supports the stated risk. It says darker skin tones can be more sensitive to visible light, including red light, and that this sensitivity can lead to hyperpigmentation. The effect is possible rather than inevitable and depends on exposure conditions.
“A carnivore diet is healthy in the long term.”
Available evidence does not establish the carnivore diet as healthy over the long term. Direct reviews report inadequate long-term research and identify plausible cardiovascular and nutrient-related risks, while major health guidance favors fiber-rich plant foods and limits saturated fat. Favorable findings come mainly from uncontrolled self-reports or theoretical nutrient models, neither of which demonstrates long-term safety or health.
“Taking cold showers provides health benefits.”
Evidence supports limited benefits from cold showers, but not broad health improvement. A randomized trial found reduced self-reported sickness absence, while reviews report possible benefits for sleep, stress, and quality of life. Many findings come from cold-water immersion rather than showers, and evidence for immune, mood, and cardiovascular benefits remains inconclusive.
“Zoey, a character in the film KPop Demon Hunters, has diabetes.”
No canonical source identifies Zoey as having diabetes. Official character materials and mainstream reference pages do not mention it, while the sources asserting or implying it are fan discussions, theory videos, and a fanon wiki. Visual speculation about an accessory or device is not enough to establish a confirmed diagnosis for the character.
“Eating smoked foods increases the risk of cancer in humans.”
The evidence supports a real increase in cancer risk, especially for processed and heavily smoked meats. High-quality sources, including IARC/WHO and major cancer agencies, link smoke-derived carcinogens such as PAHs and certain smoked/processed meats to higher cancer risk in humans. The claim is somewhat overbroad because risk is not equally established for every smoked food, and it depends on dose and preparation.
“A Patient Health Questionnaire-9 (PHQ-9) score of 10 or higher indicates that clinical depression is present.”
A PHQ-9 score of 10 or higher is best understood as a positive depression screen, not a confirmed diagnosis. Research supports it as a common cutoff that suggests possible major depression and warrants clinical evaluation, but authoritative guidance says depression should not be diagnosed solely from that score. The claim overstates what the number alone can establish.
“Symptoms assessed by the Patient Health Questionnaire-9 (PHQ-9) can overlap with symptoms caused by other health conditions.”
The claim is well supported. Multiple high-quality clinical and research sources show that some PHQ-9 symptoms, particularly somatic ones such as fatigue, sleep problems, and appetite change, can also be caused by other medical conditions. That is why PHQ-9 results are typically interpreted alongside clinical assessment rather than in isolation.
“Low vitamin B levels, low vitamin D levels, and low iron levels can contribute to symptoms that may be mistaken for depression.”
The evidence supports the claim’s core point. Low iron, low vitamin B levels—especially B12 and folate—and low vitamin D can be associated with fatigue, cognitive slowing, low mood, and related symptoms that overlap with depression. The main caveat is that this does not prove these deficiencies directly cause depressive disorder in every case.
“Numerous medical conditions and polypharmacy (use of multiple medications) combinations, many of which are common, can contribute to Patient Health Questionnaire-9 (PHQ-9) scores of 10 or higher.”
The evidence strongly supports the claim. Multiple high-quality studies and clinical guidelines show that common medical conditions, multimorbidity, and medication burden can raise PHQ-9 scores to 10 or higher because the questionnaire captures symptoms that are not unique to major depression. A PHQ-9 score at or above 10 is therefore a screening signal, not proof of depressive disorder.
“Anthony Fauci received $1,000,000 in compensation during the period when 1,000,000 people in the United States died from COVID-19.”
The evidence does not support the claim as stated. Fauci did not earn $1 million in federal salary, and the closest documented figure was a nominal $1 million prize awarded in February 2021, before the United States reached 1 million COVID-19 deaths in May 2022; his personal receipt was reportedly about $900,000 after a scholarship set-aside. Reaching $1 million requires mixing different income categories or broader time periods.