ScienceInsights

Green poop is usually caused by diet or fast digestion, but here's when it might be worth a call to your doctor.

Cold sores are caused by HSV-1, a virus that stays dormant in your body and reactivates under certain conditions. Learn what triggers outbreaks and how to manage them.

Severe chest congestion responds well to hydration, expectorants, and breathing techniques like huff coughing. Here's what actually helps clear mucus.

A sprained wrist often causes pain, swelling, and tenderness that can feel surprisingly similar to a fracture. Here's how to tell what's going on.

Learn what impacted earwax looks like from the outside and through a doctor's scope, plus what earwax color and symptoms can tell you about your ear health.

Stomach burn is often manageable at home, but knowing what's causing it and when to see a doctor can make all the difference.

Protein, fiber, and a few surprising picks like potatoes can help you eat less without feeling hungry. Here's what the evidence says.

Low vitamin D often comes down to where you live, your skin tone, diet, body weight, or certain medications—and usually more than one factor at once.

Upper blepharoplasty recovery takes several weeks. Learn what to expect each week, when you can resume activities, and when your final results will show.

Knee pain doesn't have to be part of running. Learn practical ways to protect your knees, from strengthening key muscles to adjusting your training load.