ScienceInsights

Blood cancer has many causes, from aging and inherited genes to past treatments and chemical exposures. Learn which risk factors are most relevant to you.

From deep breathing and cold water to beta blockers, here's what actually helps bring a fast heart rate down safely.

Alcohol blackouts happen when drinking spikes blood alcohol fast enough to block memory formation in the brain. Here's what's actually going on.

Practical guidance on weaning a breastfeeding toddler gently, including how to drop feeds, manage emotions, and support your body through the process.

Learn what MDs actually do day-to-day, how they train, where they work, and how they differ from DOs—plus a look at the growing physician shortage.

REM sleep lasts about 90 minutes per cycle, but that changes with age and lifestyle. Here's what affects it and why it matters for your health.

Learn what the dying process actually looks like, from weeks of withdrawal and fading appetite to the breathing changes that occur in the final hours.

Learn how light, meals, temperature, and exercise timing can help you shift your sleep schedule in line with your body's natural clock.

Dark stools can come from food or iron supplements, but sometimes signal bleeding. Learn how to tell the difference and when to seek care.

Red Bull's caffeine and sugar levels pose real risks for kids. Learn what the research says and why most health experts recommend children avoid energy drinks.