Insulin is a hormone that lowers the level of glucose (a type of sugar) in the blood. It's made by the beta cells of the pancreas and released into the blood when the glucose level goes up, such as after eating. Insulin helps glucose enter the body's cells, where it can be used for energy or stored for future use and from the body building point of view it is an important fact.
It is one of the most powerful anabolic hormones in the human body. It is responsible for the metabolism of carbohydrates, and also determines the transformation of fats and proteins. Appropriately high insulin level in the body has a beneficial effect on glycogen production and protein biosynthesis. It may also result in increased physical performance. Thus, regulation of insulin concentration is not only the basis for maintaining health, but also one of the ways to improve sports performance.
Using insulin in sport is considered as an unauthorized doping agent and it is not recommended to be used by healthy people. However, there are a number of natural substances that help to exploit the anabolic potential of this hormone – these are the so-called insulin mimetics.