Weird But True
Outdated or Still True?
Test You Gut
Body Horror or Medical Marvel?
100
You can get a brain-eating amoeba from swimming in freshwater lakes.
Fact! Naegleria fowleri is a real (but rare) risk in warm freshwater!
100
Cracking your knuckles causes arthritis.
Bullshit. No evidence supports this; it's just nitrogen bubbles.
100
There are more bacteria in your gut than human cells in your body.
Bullshit. This myth is outdated. Ratios are closer to 1:1.
100
You can grow teeth in your ovaries.
Fact! Teratomas are tumors that can contain hair, teeth and even bone.
200
Your stomach replaces its lining every 3-4 months.
Bullshit. It's way faster-every few days.
200
You need to drink 8 glasses of water a day.
Bullshit. Hydrations needs vary; 8 glasses is a myth.
200
The appendix has no known function.
Bullshit. It plays a role in immune function and gut flora storage.
200
There is a condition in which people bleed from their eyes.
Fact. Haemolacria is rare but real
300
A sneeze can travel up to 100 mph.
Fact! Sneezes are explosive and can hit around that speed.
300
Bloodletting was once a standard treatment for many illnesses.
Fact! Used for centuries. Even George Washington got it (and died).
300
Stomach acid can dissolve metal.
Fact. It can dissolve razor blades (ph ~1-2).
300
It's possible to have a twin living inside your body.
Fact! It's called fetus in fetu. A rare condition where a malformed twin is found inside the body, often in the abdomen.