A study published in the Journal of the American Heart Association describes that excessive consumption of coffee can increase the risk of cardiovascular disease-related mortality in individuals with severe hypertension.
Consumption of coffee is known to reduce the risk of hypertension and related mortality in the general population. However, it can cause a transient increase in blood pressure among individuals with hypertension.
Evidence shows that the beneficial effect of coffee consumption depends on the blood pressure levels of individuals. In severe hypertension patients, coffee can cause an acute increase in blood pressure, increasing the risk of cardiovascular disease.