ScienceInsights

AFib is an irregular heart rhythm that raises stroke risk. Learn what causes it, how it's diagnosed, and why some people have no symptoms at all.

Salt isn't simply good or bad — your health, genetics, and diet all matter. Here's what the science actually says about sodium and how much to worry.

Learn what actually causes a pulled hamstring, how to recognize one, and what recovery realistically looks like depending on injury severity.

Peppermint oil may worsen heartburn, contains a potentially harmful compound, and lacks safety research for pregnancy. Here's what to use instead.

Vitiligo stems from immune attacks on melanocytes, but genetics, oxidative stress, and nerve signals all play a role in who gets it and why.

Salmon has moderate purines, but its omega-3s may actually help with gout inflammation. Here's how to enjoy it without raising uric acid levels.

B12 supports hair health, but mainly if you're deficient. Learn who's at risk, how it compares to biotin, and what to realistically expect.

Acid reflux happens for several reasons, from what you eat to how you sleep. Learn what's actually causing that burning feeling and when to take it seriously.

Paxlovid can reduce severe COVID risk, but timing, eligibility, and drug interactions all affect whether it's right for you.

From heat pads to herbal teas, here are practical ways to ease stomach pain at home and signs it's time to see a doctor.