ScienceInsights

Different laxatives work at very different speeds. Here's what to expect from each type and what to do if yours isn't working.

A colonoscopy usually takes 30–60 minutes, but plan for a full day. Here's what to expect from check-in through recovery at home.

UTIs need antibiotics, but there's plenty you can do to ease discomfort in the meantime and reduce your chances of getting another one.

Tramadol clears your system in different timeframes depending on age, liver health, and test type. Here's what urine, blood, and hair tests typically show.

Find out how many calories your body actually needs based on your metabolism, activity level, and goals—without relying on misleading apps.

At 10 weeks, your baby is about the size of a strawberry and officially a fetus. Here's what's developing and what to expect in your body.

Persistent tiredness often has a medical cause — from iron deficiency to thyroid issues. Learn what might be draining your energy and when to see a doctor.

Zinc lozenges work, vitamin C is better for prevention, and echinacea probably isn't worth it. Here's what the evidence says to take at the first sign of a cold.

There's no single carb target that works for everyone, but understanding the ranges can help you find an approach that fits your life and goals.

Some common medications can trigger lupus-like symptoms. Here's which drugs carry the highest risk and what to expect if it happens to you.