ScienceInsights

Most periods last 2 to 7 days, but what's normal varies. Learn what affects period length and which changes are worth mentioning to your doctor.

Certain foods can help ease joint pain while others make it worse. Learn which ones to eat more of and what to cut back on for healthier joints.

Learn what happens during a heart attack, how to recognize the symptoms, and which risk factors make some people more vulnerable than others.

Pita bread has around 30–35g of carbs per piece. Learn how it compares to other breads and whether it fits your diet.

Banana potassium varies by size, from around 362mg to 487mg. See how that stacks up against daily needs and other potassium-rich foods.

Starting Lexapro? Here's a realistic look at what to expect each week, from early side effects to when you might start feeling better.

Calorie needs vary quite a bit as kids grow. Here's what toddlers through teens actually need based on age, sex, and activity level.

Swollen feet can often be managed with diuretics, compression stockings, leg elevation, and lifestyle tweaks like cutting sodium.

Pale or clay-colored stools can signal liver, gallbladder, or bile duct issues. Learn what they look like, common causes, and when to see a doctor.

Cranberry juice can help prevent UTIs, but it won't treat an active infection. Here's what the science and urology guidelines actually say.