Booger bodyguards? How mucus keeps you healthy. By Fox News. Published April 25, 2012 11 ... Mucus is the body’s first line of defense, and it allows vital molecules, ...

Boogers are dried nasal mucus (snot) that protect you against infections and allergens. Colors, like green or yellow boogers, can tell you about your health.

Don’t pick that booger! Boogers — the dried, crusty pieces of mucus in the nose — are actually very beneficial. They protect your airways from dirt, viruses, and other unwanted things that ...

Which get trapped by a layer of sticky snot that lines your nostrils. It's like fly paper for the flu. And as you continue to breathe, air hardens the mucus into a solid booger, a gooey prison ...

Snot is one of the immune system’s efforts to ditch a virus, but how much we produce when sick is a slippery subject. ... booger production gets pushed into overdrive.

What Is Snot? Mucous membranes in the body—like the inside of the nose—are lined with a slimy substance called mucus. In the nose, it's called phlegm or snot. When snot dries, it becomes a booger.

But he insisted it's snot. "I have never eaten a booger in my entire life," Harbaugh said with a laugh, via MLive.com. "That might have looked like what was happening.