Are energy drinks such as Rock Star dangerous? (Even the sugar free ones) My husband is 50, type 2 diabetic, and has had 2 massive surgeries in the past few years. Both involved an artery that mad it's way INSIDE of the stomach and then opening up. He now has 3 supplying blood to that region instead of 5. I can't seem to convince him that both soda (diet) and these drinks are horrible for him. I told him that if I find medical evidence to the contrary, then, I will lay off of him.