Caffeine & Brain Chemistry

Coffee blocks adenosine and increases stress hormones, which can trigger anxiety.

How Much Is Too Much?

More than 3–4 cups daily (300–400 mg caffeine) may cause restlessness and worry.

Warning Signs

Rapid heartbeat, nervousness, poor sleep, and jittery hands can signal excessive coffee intake.

Safer Coffee Habits

Limit intake, drink water alongside coffee, avoid late-night cups, and switch to green tea if needed.

When to Seek Help

If anxiety continues even after reducing coffee, consult a doctor and check key lab tests.