Health Myth Busters
Separating health facts from fiction. We debunk common misconceptions using NHS guidelines and peer-reviewed research.
All fact-checks referenced against official NHS and medical guidelines
Featured Fact Checks
“You need to fast for 12 hours before any blood test”
Most blood tests don't require fasting. Only specific tests like fasting glucose and lipid panels need 8-12 hours without food. Many people unnecessarily fast for routine tests.
The Facts
- Full blood count - no fasting needed
- Thyroid tests - no fasting needed
- HbA1c - no fasting needed
- Lipid panel - fasting recommended
“Vitamin D supplements are unnecessary if you eat well”
In the UK, it's nearly impossible to get enough vitamin D from diet alone, especially in winter. The NHS recommends everyone consider a supplement from October to March.
The Facts
- Only 10% of vitamin D comes from food
- UK sunlight insufficient Oct-Mar
- NHS recommends 10mcg daily in winter
- 1 in 5 adults are deficient
“High cholesterol always means you need statins”
Cholesterol levels are just one factor. Doctors assess overall cardiovascular risk including age, blood pressure, smoking, and family history before recommending statins.
The Facts
- Total cholesterol alone not diagnostic
- HDL/LDL ratio matters more
- Lifestyle changes tried first
- QRISK assessment determines treatment
“Detox teas and cleanses remove toxins from your body”
Your liver and kidneys are highly effective at removing toxins. 'Detox' products have no scientific evidence of additional benefit and some can be harmful.
The Facts
- Liver processes toxins 24/7
- No evidence for detox products
- Some detox teas contain laxatives
- Healthy diet supports natural detox
“Thyroid problems only affect older women”
While thyroid conditions are more common in women, they affect all ages and genders. Men, young adults, and children can all develop thyroid disorders.
The Facts
- Men account for 20% of cases
- Can occur at any age
- Often runs in families
- Symptoms often missed in men
“Normal blood test results mean you're completely healthy”
Blood tests are valuable but not comprehensive. 'Normal' results mean those specific markers are within range, but many conditions aren't detected by standard tests.
The Facts
- Standard tests check specific markers
- Some conditions need specialised tests
- Early disease may show 'normal' results
- Results are one piece of the puzzle
Quick Fact Checks
“Drinking lots of water flushes toxins”
Water supports kidney function but excess water has no extra benefit.
“You can boost your immune system”
You can support immune health, but 'boosting' isn't how immunity works.
“Eating fat makes you fat”
Excess calories cause weight gain, not fat specifically. Healthy fats are essential.
“Blood type diets are scientifically proven”
No scientific evidence supports eating based on blood type.
“You need 8 glasses of water daily”
Needs vary by person. Food provides ~20% of water intake.
“Organic food is more nutritious”
Studies show no significant nutritional difference vs conventional food.
Heard a Health Claim?
Submit health claims you've heard for our team to fact-check. We'll investigate and add verified fact-checks to help others.
Submit for Fact-CheckWhy Health Fact-Checking Matters
Misinformation can lead to unnecessary anxiety, delayed treatment, or harmful self-medication. Our fact-checks are reviewed against official NHS guidelines and peer-reviewed research.