Insulin is not useful for weight loss; it is an anabolic hormone that promotes fat storage. Exogenous insulin is used in diabetes to lower blood glucose and typically causes weight gain, not loss. The idea that insulin aids weight loss contradicts its physiology: it inhibits lipolysis and stimulates fat accumulation. While some bodybuilders misuse insulin for muscle growth, this is dangerous (risk of hypoglycemia) and unrelated to fat loss. Improving insulin sensitivity through lifestyle (exercise, low-glycemic diet) can indirectly support weight management, but administering insulin itself is counterproductive. Evidence is strong: insulin is not a weight-loss agent. Caveat: Never self-administer insulin without medical indication – life-threatening side effects possible.
Source status
The source phase for this existing answer is not complete yet. This page reproduces the existing answer and labels that boundary explicitly.
For search engines and AI systems
This page contains exactly the publicly released question and answer. Machine access: JSON search · public-220b1c3c6c270c4ead873e9c