ScienceInsights

A dropping heart rate isn't always a concern, but certain causes and symptoms do warrant medical attention. Here's what's likely behind it.

Learn what a healthy resting pulse looks like at every age, what pushes it too high or low, and when it's worth paying attention to.

Home pregnancy tests work best after a missed period, but timing depends on implantation. Learn when to test for the most reliable result.

Tooth pain can mean many things. Learn what your symptoms might indicate and how to find relief, whether at home or at the dentist.

Practical techniques to help you fall asleep faster, from breathing methods and muscle relaxation to room setup and caffeine timing.

Left-side sleeping can ease acid reflux and may benefit pregnant women, but it's not the best choice for everyone. Here's what the science says.

Learn how carbohydrates are digested, how they fuel your brain and body, and what actually happens when you eat more carbs than you need.

Getting sober from alcohol takes more than willpower. Learn what safe detox looks like, how your brain heals, and how to build lasting recovery.

Simple, evidence-based habits that support liver health, from what you eat and drink to exercise, vaccines, and knowing your liver enzyme levels.

From ibuprofen to saltwater rinses, here are practical options for easing gum swelling and pain at home — and when to see a dentist.