ScienceInsights

A hemoglobin of 8.9 signals moderate anemia. Learn what symptoms to watch for, common causes, and how doctors typically treat it.

If Lexapro isn't the right fit, here are alternatives worth discussing with your doctor based on your specific side effects or treatment goals.

Learn who qualifies for Medicare, from turning 65 to disability and certain health conditions, plus how work history affects what you pay.

Not all stress is bad. Short-term stress can sharpen focus, boost immunity, and even grow new brain cells — here's how it works.

Panic attacks stem from a mix of brain chemistry, genetics, and triggers. Here's what's actually happening in your body and mind when one strikes.

Collagen supplements start as animal hides and bones. Here's how they're cleaned, extracted, and turned into the powder in your morning coffee.

O positive is the most common blood type. Learn what it means, who you can donate to, and why it matters in emergencies and pregnancy.

Find out which brand-name and combination products contain guaifenesin, and how to use them safely and effectively.

Practical mind and body strategies to help manage anxiety, from breathing techniques and grounding exercises to sleep, exercise, and knowing when to seek support.

Learn how to measure your heart rate by hand or with a device, and what your numbers actually tell you about your health.