Coffee blocks adenosine and increases stress hormones, which can trigger anxiety.
More than 3–4 cups daily (300–400 mg caffeine) may cause restlessness and worry.
Rapid heartbeat, nervousness, poor sleep, and jittery hands can signal excessive coffee intake.
Limit intake, drink water alongside coffee, avoid late-night cups, and switch to green tea if needed.
If anxiety continues even after reducing coffee, consult a doctor and check key lab tests.
