Please don't do that. The older R/N/L insulins are clearly not as good as the newer insulins, that much is true. But they are sufficient to live a relatively he

Please don't do that. The older R/N/L insulins are clearly not as good as the newer insulins, that much is true. But they are sufficient to live a relatively healthy life as a diabetic. You need to be more careful and strict with your diet and activity, but there's nothing inherent in them that causes blindness or death.