ScienceInsights

Diarrhea from a virus usually clears in a few days, but other causes can last longer. Here's what to expect and when to see a doctor.

Spaceflight does surprising things to the human body, from weakening bones and shifting gut bacteria to altering gene expression and vision.

Learn how to access your medical records online through patient portals, apps, and formal requests, plus what to do when records aren't easy to find.

Learn what healthy vaginal discharge looks like, how it shifts through your cycle, and which changes may signal an infection worth discussing with your doctor.

Get the most from sildenafil with practical tips on timing, food, alcohol, dosage, and what to realistically expect from the medication.

A practical guide to eating well with type 2 diabetes, covering the best foods for blood sugar control and what to limit.

Fatigue, mood changes, and irregular cycles can all point to hormones. Learn the key signs of imbalance and when it's worth getting tested.

For women, binge drinking starts at 4 drinks in one sitting. Learn why the threshold is lower and how it affects liver health, fertility, and cancer risk.

Under-eye puffiness has several causes, and the right fix depends on which one you have. Here's how to tell them apart and what actually helps.