Total nonsense. If you consume enough of any substance, it will eventually kill you. Aspartame is THE most heavily studied food additive in human history and every well-conducted study has found it to be harmless. You need to consume the equivalent of 125+ cans of Diet soda per day to see an even slightly elevated risk of cancer or any other serious disease. This is disgusting, misprepresentative fear-mongering that will steer people away from low-calorie alternatives to sugary soft drinks, thereby contributing to increasing rates of obesity and diabetes and playing right into the sugar lobby's interests.