Scientists from the University of Athens have discovered that olive oil may be more effective than Viagra at treating erectile dysfunction, U. Scientists looked at health and diet in a group of men with an average age of The study focused on the benefits of a Mediterranean diet and discovered several advantages to olive oil. The research found that men who replaced all butter with olive oil while following a Mediterranean diet — which is rich in oils, legumes, nuts, unrefined carbs, fruits and vegetables, moderately high in fish and dairy, and low in red meat and processed foods — saw significant improvements in their sexual health. The study's lead researcher, Dr. Christina Chrysohoou, told The Independent that "men that follow a Med diet — particularly consuming lots of olive oil — see their risk of impotence reduced by up to 40 per cent in older age.