Are you a new diabetic? Diabetes is a serious disease but will not preclude you from doing anything you want, in any industry. Follow your doctors advice, watch your diet and be well.
PS : Find a friend that can give you the insulin shots with no qualms. One of my best friends is diabetic and she loves it when I'm around when she needs that shot. She says that she can hardly feel it because I just jab it in and get it out. NO SEXUAL INNUENDO HERE! Although I wish.
Seriously though, you can do anything you want. Go for it.
The day you stop learning is the day you should die.