This is a really good question, Insulin is very questionable. Insulin, a hormone produced by the pancreas which lets your body use sugar from carbohydrates in foods you eat for energy. read more
Human Growth Hormone and Insulin are Friends - Eat to Perform. Here is another site, which talks about the levels of insulin and HGH. If HGH is in insulin and it is a HUMAN GROWTH HORMONE, I would think it would be considered a steroid. read more
Insulin is a highly anabolic and powerful hormone produced by all human beings and is essential to a well-functioning individual. Although produced naturally by the human body, insulin is often administered exogenously to those suffering from diabetes. read more
On the other hand, The term Anabolic Steroid refers to a particular class of steroids that are related to the male hormone testosterone only. This particular steroid helps in heightening the process of protein synthesis inside the cells which can help in building up of the cellular tissue. read more