Mizuki Nakano, a former professor at the University of Tokyo, in Japan, has been consuming only fruit for the last eight years, even shunning water and relying on fruit juices for hydration. He recently came on a Japanese TV show to say that his fruit-only diet has caused his body to somehow convert nitrogen in the air into the protein it needs.
In September of 2009, Mizuki Nakano decided to see what would happen to his body if he consumed nothing but fruit all day, every day. Even back then, the scientific consensus was that a balanced diet that contained enough protein, fat and carbohydrates was the best way to go, and that relying solely on fruits for nutrition would deprive the body of needed nutrients and potentially cause serious health problems. But Nakano noticed that there was no scientific research on the long-term effects of eating only fruits, so he started an experiment with himself as the guinea pig.