ScienceInsights

Sweaty feet in shoes often come down to materials, sock choices, and bacteria. Learn what's normal and what actually helps reduce moisture and odor.

Early teething signs in a 4-month-old include swollen gums and extra drool, but not fever or sleep troubles. Here's how to tell what's really going on.

Many STDs in women cause no obvious symptoms. Learn what signs to watch for and why regular testing is the most reliable way to know your status.

Constant throat clearing is often caused by post-nasal drip, silent reflux, or even your blood pressure medication. Here's how to find relief.

Testing too early can mean missing a real pregnancy. Here's how hCG levels and implantation timing affect your results.

Same-day dental implants let you leave with a tooth in one visit. Here's how the process works, who's a good candidate, and what to expect.

Find out how much protein you actually need for weight loss, how to spread it through the day, and what the research says about safety and muscle preservation.

A sore, swollen roof of the mouth can stem from burns and canker sores to oral thrush or mucoceles. Learn what's likely causing yours and when to see a dentist.

Learn how to check your heart rate using your iPhone or Android phone, and find out how accurate these readings actually are.

Diagnosed with Lyme disease or worried you might have it? Here's what to do right now, from treatment to recovery.