Mucus isn't exactly something people give much thought to — until they're sick and dealing with a constantly runny nose. But mucus is actually an important part of a healthy immune system, according ...

If you’re blowing your nose regularly, it’s hard not to notice your mucus—and what color it is. So it can also be alarming if you happen to spot yellow, brown, bloody, or green mucus in your used ...

Black mucus is rare. It can be the sign of a fungal infection, or exposure to pollutants such as coal, dust or cigarette ...

When a person has black or dark-colored mucus, they may have inhaled potentially harmful pollutants. Coughing up black mucus may also be due to an underlying infection or condition. Mucus serves an ...

A doctor has explained what the different colours of your snot might mean, as it can tell you when it's time to contact your GP for medical help. As the temperatures are getting colder, and kids are ...

Being sick blows. Not only are you struggling to breathe, but you also have to worry about snot dripping down your nose. Even when you grab a tissue, there's always that morbid curiousity to look down ...