ScienceInsights

Stomach trouble after dairy doesn't always mean lactose intolerance. Learn how to test yourself at home and when to seek a clinical diagnosis.

Learn which nutrients support thicker, healthier hair and the everyday foods that deliver them, from protein and iron to omega-3s and zinc.

Learn how to treat an ingrown toenail at home with soaks and cotton lifting, plus how to tell when it's time to see a doctor.

Mint and testosterone — here's what the actual research says, who it might affect, and whether your daily mint tea is worth worrying about.

Fluid retention causes puffiness and swelling, but the reasons behind it range from salty meals to serious organ issues. Here's what to know.

Pearly penile papules are harmless and common. Learn what they are, how they differ from warts, and what your options are if they bother you.

Colic in horses, cattle, and dogs can range from mild discomfort to a life-threatening emergency. Learn the signs, causes, and when to call a vet.

Wild-caught flounder is a lean, low-mercury fish with solid protein and potential metabolic perks. Here's what the nutrition data actually shows.

Cardiovascular disease covers more than heart attacks. Learn what conditions qualify, why symptoms differ by sex, and what you can do to lower your risk.

Eyelid twitching is usually harmless and tied to stress or caffeine, but here's what to know about causes, fixes, and when to see a doctor.