Mucus is usually clear when you're not sick. So it can be startling when your boogers are suddenly as yellow as the sun. Though it might give you the ick, your mucus isn't changing colors out of ...

A lot of people think yellow or green snot means you need an antibiotic. That is not true. Laura Martin, MD, MPH If it's a viral infection causing the yellow or green snot, yellow in particular is ...

Knowing how to spot symptoms of pneumonia early on can help you get the right […] "Yellow mucus is associated with the immune ...

Julia Calderone wrote an earlier version of this post.