Gonorrhea spreads through sexual contact, often from people with no symptoms. Learn how transmission works, who's at risk, and how to protect yourself.
Atopic dermatitis isn't contagious, but the stigma around it is real. Learn what causes flares, what's actually infectious, and how to explain it to others.
Diarrhea color can reveal a lot about your health. Learn what green, yellow, red, black, and pale stool may indicate and when it's time to see a doctor.
Zetia lowers cholesterol by blocking a protein in your gut, not by affecting how your liver makes it. Here's how it works and where it fits in treatment.