ScienceInsights

Brittle nails often point to low biotin, iron, or zinc—but calcium usually isn't the culprit. Here's what the evidence actually says.

From exercise and diet to medication and surgery, here's what the evidence says about managing chronic joint pain effectively.

Learn how often to take amoxicillin 500mg, how long your course should last, and practical tips for missed doses and timing.

Find out which fish are safe to eat during pregnancy, why mercury is a concern for your baby, and which seafood is actually worth adding to your diet.

A swollen right eye can stem from a stye, pink eye, or something more serious. Learn the common causes and when to seek medical care.

Pyelonephritis is a kidney infection that needs prompt treatment. Learn how it differs from a bladder infection, who's at risk, and how it's treated.

Acute bronchitis usually clears up in 1–3 weeks, but the cough can linger. Learn what's normal, what's not, and when to see a doctor.

Burning eyes are often caused by dry eye, allergies, or eyelid issues. Learn what's behind the irritation and what actually helps.

Anger triggers real physical changes, from stress hormones to heart strain. Here's what happens in your body and brain when anger strikes.

A closer look at what bacterial vaginosis actually looks like, from a clinical exam to microscope findings, and how it differs from a yeast infection.