That card you just used has two sides: people who are born insulin-dependent are paying more in part because of others who could have avoided developing the illness.
Address the cause of the demand increases, and you're on the way to addressing the price as well as improving peoples' quality of life.
I used to be a heavy smoker and although I've quit, I'm acutely aware that if I ever need a cancer related transplant I'll probably not be given the same priority as someone with a congenital cause - and with good reason.
I made a lifestyle choice that can have serious consequences for my health - and the same goes for people who choose to overindulge on shitty food.