Caffeine intoxication occurs when a person has dangerously high levels of caffeine in their system, and symptoms can include seizures and trouble breathing.

New research suggests that certain doses of caffeine consumption can disrupt one's sleep — even when caffeine is consumed 12 hours before going to bed. Skip to content PEOPLE ...

Caffeine doesn’t just make it harder to fall asleep; it changes how the brain behaves during rest. New research shows that caffeine alters brain activity in ways that make sleep look more like ...