Drinking six or more cups of coffee a day can be harmful to your health, increasing the risk of heart disease by up to 22 percent, a study claims. A morning coffee is essential for many people looking to kick-start their day.
While the humble coffee may be a vital feature of the daily grind, researchers from the University of South Australia wondered how much caffeine is too much. They investigated the association of long-term coffee consumption and cardiovascular disease, finding the point at which excess caffeine can cause high blood pressure, a precursor to heart disease.