Dangerous, and would be of limited benefit. Being non-diabetic means your body makes enough. Taking insulin on top of that could easily drive you into unconscio

Dangerous, and would be of limited benefit. Being non-diabetic means your body makes enough. Taking insulin on top of that could easily drive you into unconsciousness and even death. Low blood sugar is NO JOKE. If you're interested in this line of thinking, metformin is probably both more promising, as well as substantially cheaper and far safer - it basically increases your body's sensitivity to insulin, without actually mucking with production/regulation of same.