FactGuard
Evidence over opinion

Fact Checks

Clear answers to common questions about science, health, and persistent myths. Each summary describes a finding originally published by an established fact-checking organization and links to the original review.

26 fact checks · How these are made · Corrections

Health False
Do vaccines cause autism?
No — the evidence does not support this claim.
Science False
Do humans only use 10 percent of their brains?
No — the evidence does not support this claim.
Science False
Is the Great Wall of China visible from space with the naked eye?
No — the evidence does not support this claim.
Science False
Were the Apollo Moon landings faked?
No — the evidence does not support this claim.
Science False
Is the Earth flat?
No — the evidence does not support this claim.
Technology False
Do 5G networks spread COVID-19?
No — the evidence does not support this claim.
Health Mostly false
Is MSG dangerous to eat?
Largely no — the evidence mostly does not support this claim.
Health Mostly false
Does cracking your knuckles cause arthritis?
Largely no — the evidence mostly does not support this claim.
Myths False
Do people swallow eight spiders a year in their sleep?
No — the evidence does not support this claim.
Myths False
Do goldfish have a three-second memory?
No — the evidence does not support this claim.
Myths False
Are bats blind?
No — the evidence does not support this claim.
Science False
Is it true that lightning never strikes the same place twice?
No — the evidence does not support this claim.
Health Mostly false
Does everyone need to drink eight glasses of water a day?
Largely no — the evidence mostly does not support this claim.
Science Mostly false
Do humans have only five senses?
Largely no — the evidence mostly does not support this claim.
Myths False
Do bulls get angry at the color red?
No — the evidence does not support this claim.
Health False
Does shaving make hair grow back thicker and darker?
No — the evidence does not support this claim.
Science False
Does the tongue have separate zones for sweet, sour, salty, and bitter?
No — the evidence does not support this claim.
Science False
Do hair and fingernails keep growing after death?
No — the evidence does not support this claim.
History False
Did Vikings wear horned helmets?
No — the evidence does not support this claim.
Myths Mostly false
Do chameleons change color to match their surroundings?
Largely no — the evidence mostly does not support this claim.
Science False
Is the blood in your veins blue?
No — the evidence does not support this claim.
Health False
Does sugar make children hyperactive?
No — the evidence does not support this claim.
Myths False
Are daddy longlegs the most venomous spiders but unable to bite?
No — the evidence does not support this claim.
Myths False
Do frogs and toads give you warts?
No — the evidence does not support this claim.
Health False
Do you lose most of your body heat through your head?
No — the evidence does not support this claim.
Science Mostly false
Does one dog year equal seven human years?
Largely no — the evidence mostly does not support this claim.

FactGuard summarizes third-party fact-checks for general information only — not legal, medical, or financial advice. Found something wrong? Report an error.