ScienceInsights

Under-eye bags have different causes, and the right fix depends on yours—from cold compresses to fillers to surgery.

Most people need a few weeks to adjust to Vyvanse. Here's what to expect as your body adapts, from early side effects to finding your steady state.

A lower resting heart rate is often a sign of good fitness, but sleep, medications, thyroid changes, and electrolytes can all play a role too.

Getting a narcissist into therapy is rarely straightforward, but certain approaches are more likely to work than others. Here's what to try.

Puberty timelines vary widely, and most teens are still developing at 15. Here's what's actually normal and when to talk to a doctor.

Morning face puffiness is usually harmless. Learn what causes it—from sleep position to sodium—and simple ways to reduce it.

From chest pain to leg swelling, learn how heart disease symptoms can vary by type and between men and women, including signs that are easy to overlook.

Dry mouth can stem from medications, health conditions, or lifestyle habits. Learn what's causing yours and how to find relief.

Popcorn lung survival depends on its cause, severity, and treatment. Learn what the research says about prognosis and the factors that affect outcomes.

Severe dandruff often needs more than a basic shampoo swap. Learn what causes it, which treatments work, and when to see a doctor.