If your mucus is gray or black... …you likely inhaled dark-colored particles, like smoke from a fire or heavy exhaust.

This cold and flu season, you may be looking for clues you're getting better anywhere you can find them, even in the color of ...

When a white blood cell finds a germ, it latches onto it. Then it changes its shape to surround the germ. You can imagine the ...

A stuffy nose can cause a lot of discomfort However most of the time it does not require medical attention and resolves on ...

A lot of people think yellow or green snot means you need an ... as often as you want -- help moisturize your nasal passages and keep that mucus thin. Michael Smith, MD Nasal Irrigation is a ...

It’s that time of year again, when everyone’s fighting a cold and blowing their nose. Maybe you’ve found yourself having sinus struggles, or you’ve noticed your boogers don’t look “normal.” Whatever ...

In a typical viral respiratory infection, such as the common cold, mucus in the nose starts out as clear but gradually turns yellow or green as the infection progresses. So essentially ...