Is caffeine harmful for your heart?

Trying to understand contradictory information if caffeine is harmful for your heart?

Coffee is not recommended to sufferers of glaucoma, because the detrimental effect on the mechanism of regulation of elevated pressure. Black potion is not recommended either diabetics or people with increased blood fat.

Coffee cancels the effect of treatment of diabetes. In fact, the whole treatment in patients with diabetes is aimed at lowering blood sugar levels, each cup of coffee, liberated by stress hormones, leading to an increase in blood sugar.

Enjoy the reading and let me know your opinion,
Ruthie