Biology Insights

Urethritis can be an STI, but not always. Learn what causes it, how symptoms differ by sex, and how it's treated.

From insulin and medications to diet and exercise, here's how doctors and patients manage high blood sugar levels effectively.

Rectal pain can stem from hemorrhoids, fissures, muscle spasms, or infections. Learn what might be causing yours and when to see a doctor.

Sounds above 85 decibels can damage your hearing over time, but volume is only part of the story. Learn how duration, intensity, and ear anatomy all play a role.

Hot dogs carry real health risks, from cancer links to high sodium. Here's what the research says and how often you can safely eat them.

Most men masturbate regularly, but does frequency actually affect testosterone, fertility, or prostate health? Here's what the research says.

Vaginal pain can stem from infections, hormonal shifts, muscle tension, or skin irritation. Learn what might be causing yours and when to see a doctor.

Erectile dysfunction has many possible causes, from heart disease and diabetes to stress and certain medications. Here's what's actually behind it.

Blisters fill with fluid for a good reason. Learn what that fluid is, when it signals a problem, and whether popping a blister is ever a good idea.

Most kidney stones can't actually be dissolved, but some can. Learn which types respond to treatment and what your real options are.

Still working past 65? Learn how your job-based insurance affects Medicare enrollment, costs, and coverage gaps before making a costly mistake.

Scalp fungus can spread to others, but treatment is straightforward. Learn how it's passed, who's most at risk, and how to protect your household.

Glucose is essential for your body, but too much or too little causes real problems. Learn what healthy blood sugar looks like and why your food sources matter.

Vaginal burning has many causes, from irritants to infections to hormonal shifts. Learn what's likely behind yours and how to get relief.

Bareback sex means sex without condoms. Here's what the research says about STI risks, how PrEP helps, and ways to stay safer if you choose not to use condoms.

Dyscalculia is a learning difference that makes math genuinely hard, not just stressful. Learn how it's recognized, diagnosed, and supported.

Glaucoma can permanently damage your vision before you notice any symptoms. Learn who's most at risk and how early treatment helps protect your sight.

Actos lowers blood sugar in type 2 diabetes, but comes with real risks like heart failure, bladder cancer, and bone fractures. Here's what you should know.

Practical ways to relieve heartburn fast, from food triggers and sleep position to medications that actually work and myths worth skipping.