ScienceInsights

Collagen supplements are generally safe, but dosage, source, and quality matter. Here's what to know before adding them to your routine.

Swollen knee? Learn how to treat it at home and which symptoms mean it's time to call a doctor.

From heart surgeons to eye surgeons, here's a clear overview of 13 surgical specialties and what each one focuses on.

Insulin resistance and type 2 diabetes are related but not the same thing. Learn how one leads to the other and what you can do about it.

Learn what it takes to become an LPN, from program requirements and the NCLEX-PN exam to typical salaries and paths toward becoming an RN.

From OTC lubricants and moisturizers to vaginal estrogen and prescriptions, here's what actually helps with vaginal dryness.

Blood tests detect pregnancy earlier than home urine tests, but timing and technique still matter. Here's what to know before you test.

Learn how a stereotactic breast biopsy works, what the procedure feels like, and what to expect before, during, and after.

Night sweats are usually harmless, but sometimes they're worth a closer look. Learn what's behind them and when to talk to a doctor.

From saline rinses to antihistamines, here's how to find relief from a runny nose based on what's actually causing it.