For the doctor and researcher Luiz Antonio Machado César, from the Heart Institute - Incor, Clinical Hospital, Faculty of Medicine, University of São Paulo - USP, coffee does not harm health if taken in moderate amounts and usual meaning up to four cups per day. It assesses the effects of coffee on variables involving the cardiovascular system to know the effects of alcohol in blood pressure and heart patients who already have coronary diseases and states that according to recent studies, there isn't evidence that coffee is bad for people with heart problems.