Eye crust is usually harmless sleep residue, but color and texture can reveal infections like pink eye or blepharitis. Here's how to tell the difference.
Your heart does more than pump blood. Learn how it circulates oxygen, regulates itself electrically, and even releases hormones to keep your body balanced.
Breast cancer genes like BRCA1 can be inherited dominantly, but most cases aren't hereditary at all. Here's what the genetics actually mean for you and your family.
Goldenseal is used for colds, digestion, and skin care, but the evidence is limited and side effects are real. Here's what you should know before trying it.