Biology Insights

Tuberous sclerosis is a genetic condition that can affect the brain, skin, kidneys, and heart. Learn how it's caused, recognized, and managed.

Narcolepsy is a brain disorder affecting sleep control. Learn what causes it, how it's diagnosed, and what daily life looks like for those who have it.

Red 40 gets blamed for cravings, but the sugar it travels with is likely the real culprit. Here's what the science actually shows.

Learn what's really behind a cough, from the reflex itself to common causes, and which symptoms mean it's time to see a doctor.

Stuffy nose got you down? Learn which home remedies actually relieve congestion and when it might be time to see a doctor.

White discharge is usually normal, but texture, smell, and timing can signal a yeast infection or BV. Here's how to tell the difference.

Mouth sores can have many causes, from minor injuries to infections. Learn what type you may have and how to ease discomfort and prevent them from returning.

Learn how food, movement, sleep, and a few key supplements can help your body keep inflammation in check over the long term.

A clear look at how heroin affects the brain and body, from receptor binding and breathing suppression to tolerance, dependence, and long-term changes.

Flour is mostly starch, which digests quickly and spikes blood sugar. Learn how it fits into your daily carb intake and which alternatives have fewer carbs.

Rimming carries unique health risks like gut infections and STIs. Here's what you need to know to do it more safely.

Learn how to get propranolol prescribed, whether through a doctor's visit or online telehealth, plus what to expect at your appointment and typical costs.

Learn what unprotected sex actually means, how pregnancy and STI risks work, and what to do next—including when to get tested.

Situational depression is tied to a specific life event and often gets better with time and support. Learn what it feels like and how it's treated.

Learn what allergens are, why your immune system reacts to them, and what separates a mild reaction from a serious one.

Hypothermia sets in below 95°F, but the signs can appear before your thermometer catches it. Learn the stages and what to watch for.

From medications and exercise to diet and therapy, here's a practical look at the most effective options for managing erectile dysfunction.

Eggs are packed with protein, choline, and antioxidants, but how many are safe to eat daily? Here's what the nutrition science actually shows.

ExtenZe makes bold promises for sexual performance, but the evidence tells a different story. Here's what's actually in it and what the risks are.