Your son's age points more towards type 1 diabetes
which will need Insulin
forever, right from the first day. But type 2 diabetes in this age is not very uncommon these days.
What is his weight? Is he lean or overweight?
In what condition was he admitted in the hospital?
I dont think, those drinks could be the only cause of his diabetes. 700s sugars definitely makes one very thirsty(polydipsia
). Maybe he was drinking them as he was thirsty.
How is he now? What medications is he taking? Please keep us updated.