Can Coffee Cause Anxiety?

Yes, high doses of caffeine can mimic or worsen symptoms of anxiety. Caffeine stimulates the central nervous system and triggers the release of adrenaline, the fight or flight hormone. In Singapore, where a cup of traditional kopi gao is highly concentrated, excess intake can lead to jitters, nervousness, an increased heart rate, and heightened anxiety levels. Source: Institute of Mental Health Singapore / HealthHub Singapore