Mucus — less elegantly known as snot — may be annoying when you're sick, or when it feels like you have too much of it, but your body needs it to stay healthy. Technically, mucus is a sticky, ...

Mucus is a normal part of the lungs. But smoking and other issues can cause too much mucus to collect there. (Photo Credit: iStock/Getty Images) Your body makes about a liter (approximately 1 quart) ...

The mucus plug is a protective layer made up of sticky mucus that seals the cervix (the opening of the uterus). The cervical canal produces this plug to protect your womb and unborn baby from bacteria ...