ScienceInsights

A persistent cough usually has a common cause like post-nasal drip, reflux, or asthma. Learn what's likely behind yours and when it's worth seeing a doctor.

ADHD medication costs vary widely, from $30 to over $300 a month. Here's what to expect for common options and how to spend less.

Ketamine is neither local nor general anesthesia — it's dissociative. Here's what that means and how it's used in medicine.

Herpes symptoms typically appear 2–12 days after exposure, but many people never notice signs. Learn what to expect and when testing makes sense.

Sumo wrestlers face serious health risks after retirement. Learn why cardiovascular disease shortens their lives and whether losing weight helps.

Learn what counts as high liver enzymes, what causes levels to rise, and what your doctor will likely do if your results come back abnormal.

After an endoscopy, what you eat matters. Learn which foods and drinks to avoid so your throat and stomach can recover comfortably.

Olive oil holds up better to heat than most people think, and its heart benefits survive everyday cooking just fine.

A bigger stomach can stem from bloating, fat gain, hormones, or something more serious. Learn what's actually behind the change and when to see a doctor.

Learn what heart rate ranges are normal for your age, what causes a faster pulse, and when a high resting heart rate might need medical attention.