ScienceInsights

Light spotting in early pregnancy is common and often harmless, but knowing what's normal—and when to call your doctor—can ease a lot of worry.

Depression rarely has a single cause. Learn how genetics, brain chemistry, stress, gut health, and other factors combine to influence your mental health.

Skin cancer has several causes, from UV exposure and tanning beds to genetics and immune health. Learn what raises your risk and how factors combine.

Exercise, therapy, diet, and sleep can meaningfully ease depression. Here's what the evidence actually supports for treating it without medication.

Pre-cum can contain sperm, making pregnancy possible. Here's what the research says about the actual risk and what it means for you.

Learn how to manage hemorrhoid bleeding at home, which OTC products can help, and when it's time to see a doctor.

HPV spreads through skin contact, not just sex, and most people carry it without knowing. Learn about its strains, screening, and how vaccines protect you.

Heartburn and heart attacks can feel surprisingly similar. Learn how to tell the difference and when your symptoms need medical attention.

The 3,500 calories per pound rule is useful but imperfect. Here's what fat and muscle actually contain and how to apply it realistically.

Urinary leaking in dogs can stem from a weak sphincter, UTIs, nerve issues, or bladder stones. Learn what causes it and how vets treat it.