Almost half a century without water: the billionaire made an extraordinary confession Warren Buffett, 96, admitted that he had not drunk water for 48 years. Instead of water, his diet consists of sugary soda. Addiction to Coca Cola has long been a part of his image: he drinks about five cans a day, and in 2015 he joked that a quarter of his body is it. Coca Cola The diet is also surprising: breakfast at McDonald's, hot dogs, chips, popcorn, cookies, sweets and ice cream. On a trip to China in 1995, Bill and Melinda Gates asked for hamburgers to be prepared for him in advance, and Cherry Cola was delivered to the Great Wall of China. Doctors do not recommend making these habits a pattern - and it remains a mystery how he manages to control his blood sugar with such a diet.