ScienceInsights

HGH is FDA-approved for specific conditions, but its safety for healthy adults is a different story. Here's what the evidence actually shows.

Nearsightedness affects nearly a third of the world's population, and rates are climbing fast. Here's what's behind the trend and why it matters for long-term eye health.

Cold sores can't be cured, but antivirals, zinc, and other treatments can shorten outbreaks. Here's what the evidence actually supports.

Most adults need 90 minutes of REM sleep per night. Learn what affects it, how it changes with age, and simple ways to get more of it.

Norco contains hydrocodone, but they're not the same thing. Here's what sets Norco apart and why the difference matters for your health.

Vasectomies are highly effective, but not perfectly foolproof. Here's what affects their reliability and how to confirm yours actually worked.

Black bruises happen when blood pools deeply under the skin. Learn what makes bruises turn dark, how to speed up healing, and when to see a doctor.

Squatting slightly on the toilet can make bowel movements easier and reduce straining. Here's what research says about the best position.

Dairy offers calcium, protein, and more, but is it truly essential? Here's what the science says about its real health effects.

Lifestyle changes like diet, exercise, sleep, and stress management can meaningfully lower blood pressure without reaching for medication.