ScienceInsights

Research shows most men last 5–7 minutes during sex. Here's what that means for health, satisfaction, and when it's worth talking to a doctor.

130g of protein may be enough to build muscle, but it depends on your body weight, age, and whether you're in a calorie deficit.

Most 1-year-olds need 11–14 hours of sleep a day. Here's how to split that between naps and nighttime, and what to do when sleep gets tricky.

Ingrown hairs in the pubic area are common and treatable. Learn how to safely care for them, prevent future ones, and know when to see a doctor.

Vaginal burning can stem from infections, irritants, hormonal shifts, or skin conditions. Learn what might be causing it and when to see a doctor.

Ovulating right before your period sounds possible, but biology says otherwise. Learn what's really going on with your cycle instead.

Red light therapy has solid evidence for skin, joints, and hair — but the research is more nuanced than most devices let on.

Most breast cancer diagnoses happen around age 62, but risk, subtype, and survival rates vary by decade, race, and sex.

Learn how to treat razor bumps quickly, prevent new ones from forming, and know when it's time to see a doctor.

Fire ant stings cause a predictable reaction from initial burn to fluid-filled pustules. Here's what to expect and when to seek medical care.