Black Coffee May Help Reduce Heart Failure Risk Decaffeinated coffee was linked to a higher risk of heart diseases Experts advise moderate coffee consumption as part of an overall heart healthy dietary pattern. Meta-analysis research from the American Heart Association (AHA) found that drinking one or more cups of caffeinated coffee per day was associated with a long-term decreased risk of heart failure. Surprisingly, the researchers also found the link between decaffeinated coffee and an increased heart failure risk . What is Heart Failure? Heart failure is a condition in which the heart fails to work adequately as a pump that can deliver rich blood to the body.