"Dr. David Ma, a professor of nutritional sciences at the University of Guelph, says a person weighing 70 kilograms would have to drink about 15 cans of diet pop a day to exceed that daily limit." And don't forget all of the studies about what sugar does to your body, which people always forget about while talking about aspartame. There will be a lot of people choosing sugar over aspartame because of these headlines.