Diabetics have two different problems.
1) Too little sugar in their blood.
2) Too much sugar in their blood.
Too little sugar literally means you starve to death in minutes. It does not matter if you have 200 lbs of fat on your body, if the fat is not releasing the sugar into your blood, then your heart, lung, brains have nothing to eat and you die of starvation - even if you look over weight.
Solution is to monitor your blood sugar (either constantly with a Continuous Glucose Monitoring device inserted in your body all the time, or with a finger prick device). Then when the device says to, you eat something with sugar. Sugar pills are recommended, then high sugar liquids (Orange Juice is often recommended), but any source of sugar will save your life. If a diabetic suddenly falls unconscious you usually need to FEED them something just in case their sugar is low. Especially if they have not eaten recently. Unlike the tv shows usually giving them an insulin injection is not the save their life NOW thing to do.
Too much sugar is a longer term problem. It kills your kidneys. A large number of kidney transplants are caused by eating too much when you have diabetes. (Note, it can also work the other way around - the medication they give you for a kidney transplant can give you diabetes) So before a diabetic eats, you need to check your sugar. If it is high, you inject them with insulin and wait 15 minutes before you eat.
Note, this entire process is much harder because of four factors:
A) The symptoms you feel for having too much sugar in your body are almost identical for having too little sugar in your body. You really need to check it with a CGM or a finger prick device before treatment. But in an emergency unconcious giving sugar can save their life and will not kill them if they had too much.
B) Delay. Both eating and injecting insulin take time to affect your body. So it is quite possible to eat too much, resulting in you needing to then inject insulin an hour after you had emergence sugar. Similarly, 2 hours after injecting insulin you might have to eat if you injected too much.
C) Insulin needs to be kept refrigerated or it goes bad. So if you are going out, you should take an ice pack with the insulin.
D) American food system routinely provides way too much carbs. All carbs are the same as sugar, they rocket your blood sugar. If you are not diabetic your body can handle food fine. But the following is too many carbs: two slices of pizza. Hamburger (with bun) AND small french fries. One bagel. A Belgium waffle and hash browns. A stack of pancakes.
Making insulin cheap is very important because what it does is PREVENT KIDNEY TRANSPLANTS. If a diabetic does not use enough insulin, like I said earlier, it kills their kidneys. Then they ask for a transplant and we do not have enough.
So cheap insulin means fewer kidney transplants. And kidney transplants are FAR more expensive than paying for insulin - if only because the medication you need after one is more expensive than the insulin would be.
Cheap insulin = saves the state money.