Sorry, but that isn't true. I'm a living example.  I was diagnosed as a borderline diabetic when I was 20. Then about 10 years ago I had to start taking the pills to help with sugar levels. When they no longer did the trick, I sought help from an endrocrinologist. He ran some tests and said I was a type one. I could/didn't believe it and he showed me the test results. It was then that he explained that my pancreas no longer was working and that I had developed antibodies against the pancreas which made me now a type 1.

 

Type 1 diabetics are diagnosed from childhood...as I understand it.

 

Teacherlady55