It's a myth that only obese people get diabetes. While many folks who deal with the disease do need to lose weight, it is certainly not all of the population. Some people can go into remission by cutting back on carbs and exercising more. But again, this is not true for all. In some cases you may need meds no matter what you do.
Dxd T1 1966, 2001 dialysis, 2002 kidney transplant, 2003 insulin pump, 2008 pancreas transplant