Biology Insights

Herpes sores can look different depending on the stage of infection and your skin tone. Here's what colors to look for and when it might be something else.

Biktarvy combines three drugs to block HIV replication at two key steps. Here's how it works, why it's effective, and what to expect when taking it.

Rain rot can spread between horses, but can it reach humans? Learn how this bacterial skin condition spreads and how to protect your herd.

Learn what hypothermia actually is, how your body responds to dangerous cold, and why it can happen even in mild temperatures.

Learn what causes ear infections, how symptoms differ in kids and adults, and what treatment and recovery typically look like.

Excess weight raises real health risks, but the full picture is more nuanced than a number on a scale. Here's what the science actually shows.

From metformin to insulin, here's a clear overview of the medications doctors commonly prescribe for type 1 and type 2 diabetes and how they choose between them.

Vaginal discharge is a normal part of reproductive health. Learn what's typical at different life stages and what changes might be worth checking out.

Learn what to expect when getting evaluated for anxiety, from screening tools and diagnostic criteria to ruling out physical causes.

From ibuprofen to triptans, learn which headache medicines work best, how to use them safely, and when to skip the pills and see a doctor.

Learn what a stoma is, which diseases make one necessary, and the range of physical and emotional complications that can come with living with a stoma.

Pediatric care covers more than sick visits—learn what well-child checkups include, how vaccines fit in, and when kids transition to adult care.

From zinc lozenges to sleep, here's what the evidence actually says about cold remedies that help and a few that probably don't.

Mammogram costs range from $0 to $400+ depending on your insurance, test type, and location. Here's what to expect and how to pay less.

Erectile problems can stem from blood vessel issues, nerve damage, hormones, medications, mental health, or lifestyle habits — often a mix of several.

From prescription antifungals to tea tree oil, here's what actually works for toenail fungus and how long you can expect treatment to take.

Oral mucositis causes painful mouth sores during cancer treatment. Learn what triggers it, what to expect, and how to manage symptoms and eating.

Learn what causes gas and bloating, which foods to avoid, and simple remedies that can bring real relief.