Boogers mostly contain nasal mucus, or snot. As the mucus dries, it turns into a hardened booger. Share on Pinterest At some point, we’ve all had a booger dangling from our nose or quickly grabbed for ...

Mucus in the nose helps trap germs and other particles to prevent them from entering the body. When mucus, germs, and particles dry out, it forms a booger in the nose. Removing it can be risky. Nose ...

Bloody boogers form when blood mixes with mucus in the nose and the mucus dries. Various causes may include nose-picking or ruptured vessels. The nose lining is delicate and rich in blood vessels, and ...

Everyone picks their nose. Some even eat boogers. Science says it is common. Some think it boosts immunity. But there is no proof. Doctors warn of bacteria and infections. Nose picking can cause ...