A mucus plug is a thick clump of mucus that forms a seal at your cervix (the opening to your uterus) during pregnancy. It protects the fetus from bacteria and other pathogens during pregnancy.

Myth or fact? Snot can be good for you. Producing mucus will help clear your sinuses, help clear your nasal passages. Laura Martin, MD, MPH And the snot and the mucus, they help keep our mucous ...

Your nose is built with a fantastic gooey substance called mucus, and we produce close to a liter of it every day. I'm getting there now. Every breath you take is filled with dust, dirt ...