Biology Insights

Back acne forms differently than facial acne and can scar more easily. Learn what causes it, how to treat it, and daily habits that help keep breakouts in check.

Your diet can influence serotonin levels. Learn which foods provide tryptophan, key nutrients, and gut support to help your body produce more serotonin naturally.

Kaopectate relieves diarrhea by coating the gut and fighting bacteria. Here's why it works and why it turns your stool black.

Semen and sperm aren't the same thing. Learn what semen is made of, what normal looks like, and what changes in color or composition can tell you about health.

Placental insufficiency can stem from high blood pressure, diabetes, clotting disorders, and smoking. Learn what puts the placenta at risk and how it affects your baby.

Osteoarthritis can't be reversed, but the right habits can slow it down. Learn how exercise, weight loss, diet, and other strategies help protect your joints.

Sternum pain has many causes, from costochondritis and acid reflux to anxiety. Learn what's behind your chest pain and when to see a doctor.

Buried penis is a treatable condition where the penis is hidden beneath skin or tissue. Learn what causes it, how it's diagnosed, and what treatment involves.

Terramycin faded from human medicine due to better antibiotics, not safety concerns. Here's what replaced it and whether the vet version is still relevant.

Liposarcoma is a rare fat tissue cancer with five distinct subtypes. Learn how it's diagnosed, where it develops, and what treatment typically involves.

Some people can lower blood pressure to healthy levels through diet, exercise, weight loss, and other lifestyle changes — without medication.

Harm OCD stems from brain circuitry, neurotransmitter imbalances, and genetics—not violent intent. Here's what the science actually shows.

Bipolar disorder is often misdiagnosed for years. Here's what the diagnostic process actually involves and why getting it right takes time.

Skin cancer risk depends heavily on type and stage. Learn how basal cell, squamous cell, and melanoma differ in severity and what affects outcomes.

Squirting and female ejaculation are actually two different things. Here's what the science says about what the fluid is, where it comes from, and how common it is.

Norovirus has no cure, but staying hydrated and knowing what to eat can help you recover faster and avoid complications like dehydration.

Sugar isn't a macronutrient on its own — it's a type of carbohydrate. Learn how your body uses it for energy and how to find it on food labels.

Learn what a concussion actually does to your brain, how it's diagnosed, and what recovery looks like — including when symptoms need urgent care.