Learn how caffeine affects brain chemicals and health, sleep, and mood. Understand safe daily limits, hidden sources, and signs you’re getting too much.

Is your coffee habit a heart risk or a health benefit? Experts reveal the critical difference between the immediate 'spike' in blood pressure and the actual long-term effects of drinking coffee every ...

Caffeine offers some real health benefits—but not if you go overboard. Here’s how coffee, energy drinks, and other caffeine products can affect your health.