ScienceInsights

Learn how to recover from shin splints and safely return to running, from managing pain to strengthening exercises and smarter training habits.

Cavities don't always hurt. Learn what early tooth decay actually feels like, from subtle sensitivity to more noticeable pain, and why some cavities go unnoticed.

Upper right abdominal pain can have many causes, from fatty liver to conditions that aren't liver-related at all. Learn what's worth watching and when to seek care.

Chronic bronchitis causes lasting airway inflammation and a persistent cough. Learn what sets it apart, who's at risk, and how it's managed.

Potassium is essential for dogs, but too much or too little can cause real harm. Learn what's safe, what's risky, and when to call your vet.

Learn how to check your heart rate by hand or with a smartwatch, and what your pulse can tell you about your health.

Salicylic acid, AHAs, and urea can all help dissolve keratin plugs—here's how to choose the right one for your skin type and use it safely.

Retinol isn't an acid, but it's easy to see why people mix them up. Learn what retinol actually is and how it differs from AHAs and BHAs.

Prediabetes can often be reversed through diet, exercise, sleep, and stress management. Here's what the research says about how to bring blood sugar back to normal.

Learn what causes ingrown nails, how severity is classified, and when home care is enough versus when to see a doctor.