ScienceInsights

Dandruff comes down to scalp oil, a common fungus, and individual susceptibility. Here's how those factors combine to cause flaking.

Fiber, movement, meal timing, and stress all shape how well your gut works. Here's what the science says actually makes a difference.

A heart rate of 59 bpm is usually nothing to worry about, but certain symptoms and medications can change that picture.

Learn what causes plantar fasciitis, from foot shape and footwear to exercise habits and job demands, so you can lower your risk.

Secondhand smoke contains more toxic chemicals than inhaled smoke, and even brief exposure affects your heart, lungs, and cells. Here's how it works.

Condom use varies widely by age, relationship status, and gender. Here's what the data says about who uses them, how well they work, and why many people skip them.

Magnesium supports brain health, sleep, and mood — here's what the research says and which form may work best for you.

Cortizone is a corticosteroid used to relieve skin irritation. Learn how it works, what conditions it treats, and how to use it safely.

Aortic aneurysms develop from a mix of smoking, high blood pressure, genetics, and age. Learn what weakens the aortic wall and who faces the highest risk.

Leg pain at night can stem from cramps, restless legs, or circulation issues. Learn what's behind it and how to find relief.