Insulin can be a touchy subject when it comes to fat loss, muscle growth, and weight training. It is extremely important that we understand the role of insulin in the body and how the foods we eat affect our health and physiques.
What is Insulin?
First, we must define what insulin is:
Insulin in a peptide hormone composed of 51 amino acid residues, which is produced by the beta cells of the pancreas and released when any of the several stimuli is detected. These stimuli include ingested protein and glucose in the blood, produced from digested food. Insulin has expansive effects on metabolism and other bodily systems.
What Insulin Does in the Body
Let us look at what insulin does when it is present in the body.
When present, insulin causes the uptake of blood sugar (glucose) by the vast majority of bodily cells. These cells include muscle, fatty tissue, and liver cells.
Insulin is primarily responsible for storing glucose as glycogen in the liver and muscles. When insulin is at high concentrations in the body, it prevents the use of fat as an energy source.