ScienceInsights

Learn the recommended Advil doses for adults and children, how often you can take it safely, and what signs of overdose to watch for.

Magnesium needs vary by age and sex, and supplements have a safe upper limit. Here's how much is right for you and when to be cautious.

Nicotine clears your body in days, but quitting takes longer. Here's what to expect physically and mentally over the first six months.

Bariatric surgery without insurance can cost $10,000–$30,000+. Here's what affects the price and how to make it more manageable.

Caffeine in your morning cup varies widely by brew method, roast, and where you buy it. Here's what you're actually getting in 8oz of coffee.

Sleep paralysis can be unsettling, but it's more common than you think. Learn why it happens, what triggers it, and how to reduce episodes.

Puberty timing varies widely. Learn what's considered typical for boys at 12 and when it makes sense to talk to a doctor.

Getting pregnant right after your period is unlikely but possible, especially with short cycles or long-lived sperm. Here's what to know.

The 8 glasses rule is outdated. Here's how much water you actually need and how to tell if you're staying hydrated.