Latest findings about coffee, caffeine and heart healthConsuming caffeinated coffee without added ingredients was linked to a lower risk of Type 2 diabetes, heart disease, stroke, heart failure and some irregular heart rhythms. The statement also addressed:Blood pressure: Caffeinated coffee may affect blood pressure differently depending on how much is consumed. Drinking caffeinated coffee with no flavors or sweeteners regularly also was linked to a lower risk of developing Type 2 diabetes. Heart disease and stroke: Drinking two to four cups of caffeinated coffee a day was linked to a lower risk of heart disease, heart failure and stroke. Drinking two to four cups of caffeinated coffee a day was linked to a lower risk of heart disease, heart failure and stroke.