ScienceInsights

Learn what healthy blood sugar levels look like for fasting, after meals, and A1C—plus how targets differ by age and life stage.

The 8 glasses rule is outdated. Your actual water needs depend on body size, diet, and activity level — here's how to find what works for you.

Losing fat in the lower belly area takes more than crunches. Here's what diet, exercise, and medical options can realistically do.

Kidney stones in women are linked to dehydration, hormones, pregnancy, and diet. Learn what raises your risk and how stones differ from a UTI.

Herpes has no cure yet, but antiviral treatments can reduce outbreaks and lower transmission risk. Here's what current options can and can't do.

Celiac disease diagnosis usually starts with a blood test, but timing and gluten intake matter. Here's what the testing process actually involves.

Witch hazel can soothe acne, calm irritated skin, and relieve minor discomfort. Learn how it works and whether it's a good fit for your skin type.

Big toe pain can stem from gout, bunions, arthritis, and more. Learn what each condition feels like and when it's time to see a doctor.

A closer look at how bipolar disorder shapes thought patterns across mania, depression, and the quieter moments in between.