ScienceInsights

Tylenol can cause dizziness, emotional blunting, and other surprising effects. Here's what acetaminophen actually does in your body.

Stage 1 breast cancer is highly treatable. Learn what the diagnosis means, what treatment involves, and what survival rates look like at this early stage.

Waking up too early? Caffeine, alcohol, light, and room temperature all affect the second half of your sleep more than you'd expect.

Styes are uncomfortable but usually treatable at home. Learn what causes them, how warm compresses help, and simple habits to prevent them from returning.

Difficulty reaching orgasm is common and usually has a clear cause — from medications and hormones to stress and lifestyle habits. Here's what can help.

Expired Zyrtec probably won't harm you, but it may work less well. Here's what the science says about potency loss and when to toss it.

Sadness isn't controlled by one brain region — it's a network. Learn how the amygdala, prefrontal cortex, and brain chemistry work together to shape how you feel.

Bone broth has more protein and collagen, but chicken broth has its place too. Here's how to choose the right one for your health goals.

Most Strattera side effects ease within a few weeks as your body adjusts. Here's what to expect and when to check in with your doctor.

Learn what vision tests for driving actually check, what the standards are, and what to do if your eyesight doesn't meet requirements.