ScienceInsights

Learn how to treat an ingrown toenail at home, recognize signs of infection, and know when it's time to see a doctor.

Alzheimer's progression and lifespan vary widely. Learn what drives that timeline, how the disease advances, and what ultimately causes death.

Root canals are usually needed when the inner pulp becomes infected or damaged. Learn the common causes and warning signs to watch for.

Your age, refractory period, and brain chemistry all shape how many times you can ejaculate in a day. Here's what the science says.

At 3 weeks, most babies take 2–3 oz per feeding. Learn how much is normal, why hunger spikes happen, and how to know your baby is well-fed.

Sore muscles after a workout? Learn what actually helps recovery, from light movement and foam rolling to protein intake and when to see a doctor.

A low MCHC on a blood test usually points to iron deficiency, but here's what it means, what causes it, and how it's treated.

A faster heart doesn't always mean a stronger one. Learn why tachycardia reduces blood flow, what causes it, and how it's treated.

Waking up with numb hands is often a nerve issue, but sometimes signals something more. Learn what's causing it and when to see a doctor.

Burned the roof of your mouth? Learn how to soothe the pain, speed up healing, and know when it's time to see a doctor.