https://ift.tt/2wwdHAe Too Much Caffeine May Stress the Heart Caffeine, Coffee, Blood Pressure, Anxiety and Stress In moderate doses caffeine has mainly positive effects for most people. But it increases production of cortisol, which can lead to health problems including anxiety, weight gain and heart disease. JANE E. BRODY https://ift.tt/2z5pgNL November 12, 2018 at 05:30AM