Gatorade warning

I talked to an old friend today who was telling me about her teenage son and his recent health scare. He was having shortness of breath upon exercise, so they took him to his family doctor.  She put him on an inhaler and also sent him to see a cardiologist because of his blood pressure. Because his stress test was abnormal, he was referred to Cook's Children's Hospital for a further work up.  The doctors there did every kind of test imaginable. $3,800 later, they asked him if he drank Gatorade?  Yes, all the time..... "Oh, well,  stop it!" .. They advised him to only drink it when he was sweating not as a drink  just because of being hot, etc.... They said it would be better to drink soda than Gatorade everyday.  So now without the Gatorade, he has no shortness of breath and no increased blood pressure.