Biology Insights

Recurring sinus infections usually have an underlying cause. Learn about allergies, structural issues, biofilms, and other reasons your sinuses keep getting infected.

Throat yeast infections happen when candida overgrows, often triggered by antibiotics or a weakened immune system. Learn the causes, symptoms, and treatments.

Peeling feet are usually caused by dryness, fungus, or irritation. Learn how to identify the cause and treat it effectively at home.

Managing high blood pressure starts with your plate. Learn which foods to eat more of and what to limit to help keep your numbers in a healthy range.

Bruises rarely vanish in 24 hours, but ice, elevation, and a few topical treatments can visibly speed up healing and reduce discoloration.

Learn the common signs of diabetes, from frequent thirst and fatigue to skin changes and slow wound healing, plus when symptoms become a medical emergency.

Fatty liver disease often has no symptoms, but blood tests and imaging can detect it early. Learn what to watch for and how lifestyle changes can reverse it.

That dry cough sticking around after your cold has real causes — and practical fixes, from honey to humidity to hidden reflux.

Yeast infection recovery time depends on treatment type and severity. Learn what to expect from OTC and prescription options, and when to see a doctor.

Occasional porn use isn't harmful for most people, but guilt, relationships, and habits can complicate the picture. Here's what the research says.

Anal pain when clenching is often caused by fissures, muscle spasms, or hemorrhoids. Learn what's behind it and when to see a doctor.

Kids with colds are contagious for longer than you might expect—often before symptoms even appear. Here's what parents need to know.

Learn how to check for a flat head at any age, what different shapes mean, and when it's worth talking to a doctor.

Dry eyes are often caused by clogged oil glands, screen use, or medications. Here's what's actually going on and what helps.

A practical look at what most four-month-olds can do, from smiling and cooing to rolling and sleeping, plus when to check in with your pediatrician.

Those tiny white bumps under your eyes are likely milia, not whiteheads. Learn what causes them and how to safely remove or prevent them.

Itchy feet can stem from athlete's foot, eczema, allergies, or even diabetes. Learn what's likely causing yours and when to see a doctor.

Tiny red dots on your skin can mean several things, from harmless cherry angiomas to petechiae worth checking out. Here's how to tell them apart.

Viagra doesn't appear on standard drug tests, but here's what you should know about false positives, detection windows, and your privacy rights.