Biology Insights

Skin tags under arms form due to friction, insulin resistance, and hormones. Learn what's behind them and how to reduce new ones from forming.

Dizziness when lying down is often caused by displaced inner ear crystals. Learn how BPPV works, how it's diagnosed, and how it's treated.

Most newborns lose weight at first, and that's okay. Learn what healthy weight gain looks like, how feeding method matters, and when to call your doctor.

A practical guide to the first trimester, from early symptoms and baby development to nutrition, prenatal care, and when to call your doctor.

Mouth wrinkles form for several reasons, from sun exposure to bone loss. Here's what's actually behind them and which treatments are worth considering.

From ibuprofen to honey and numbing lozenges, here are the sore throat remedies that actually ease pain and why they work.

At 25 weeks pregnant, you're in your sixth month. Here's what your baby looks like, symptoms to expect, and when to call your doctor.

White mushrooms are low in calories but rich in antioxidants, fiber, and nutrients that support immunity, gut health, and blood sugar balance.

Immunity shots can offer real benefits for some people, but they're not for everyone. Here's what the ingredients actually do and who might benefit most.

From OTC pain relievers to biologics, here's a practical look at the medications used to manage both osteoarthritis and rheumatoid arthritis pain.

STD testing is straightforward and often painless. Learn what samples are collected, how accurate results are, and what to expect at your appointment.

Ankle sprains range from mild to serious. Learn what grades 1, 2, and 3 mean, when to worry, and why proper rehab helps prevent re-injury.

A look at the lowest calorie cereals, from puffed grains to high-fiber options, and how to pick one that actually keeps you full.

How many carbs you need per hour in a marathon depends on your pace, gut tolerance, and fueling practice. Here's what the research suggests.

Heat rash can sting, prickle, or itch depending on its type. Here's what to expect and how to tell it apart from other skin conditions.

Learn how anxiety symptoms show up physically, emotionally, and behaviorally, and what separates everyday worry from an anxiety disorder.

Feeling irritable for no clear reason? Sleep, blood sugar, stress, and hormones are common culprits. Here's how to figure out what's going on.

Learn how to use Lumify eye drops safely, including dosing, contact lens tips, side effects, and what conditions it can and can't help with.