ScienceInsights

Bipolar disorder is diagnosed through clinical interviews, symptom history, and medical tests. Here's what the evaluation process actually involves.

Most periods last 2 to 7 days, but what's normal varies. Learn what affects period length and when it might be worth talking to a doctor.

Thinking about co-sleeping with your newborn? Learn which practices are safer, who should avoid bed-sharing, and how to reduce risk if you choose to.

Learn science-backed techniques like controlled breathing, cold water, and grounding to manage panic attacks in the moment and understand what's happening in your body.

Most sore throats are viral and clear up on their own, but some need medical attention. Learn what's behind that scratchy pain and when to see a doctor.

Thinning hair in women can stem from genetics, hormones, stress, or nutrition. Learn what's behind common causes and how they sometimes overlap.

Learn which blood tests diagnose diabetes, what your results mean, and what to expect at your appointment — including screening for prediabetes and gestational diabetes.

Nutella contains 21g of sugar per serving and over 200g per jar. See how it affects blood sugar and how it stacks up against other spreads.

Influenza B is contagious before symptoms appear and longer in kids than adults. Here's what to know about timing and when it's safe to be around others.

ADHD and autism share some traits but are distinct conditions with different brain patterns and treatments. Here's what sets them apart and why they often co-occur.