Airbourne - there is always a chance but sadly the truth of the matter is that you have plenty of negatives against you already...
Firstly the age - which again you can say in this climate will be ok - given that Flybe need pilots and so do others...
Flying the ATR will not see you with a great wage but you can work on it etc..
The biggest issue I see is the Diabetic bit....
Still if you don’t try - you’ll never know.....
best of luck