What is insulin, how to deliver it, and where to store it?
David Janitzek
2026-03-21
6 min. read
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Maintaining an appropriate insulin level is essential for the proper functioning of our body. In cases of disorders related to this key hormone in carbohydrate metabolism, we refer to type I or type II diabetes. A too low blood glucose level can lead to loss of consciousness or drowsiness, as it is the only source of energy for our brain. It is valuable to familiarize oneself with this transport factor and understand its functioning.
Insulin? What is it?
Insulin, like every hormone in our body, is a protein made up of two polypeptide chains: A and B. It gets its name from the place where it's made from the liver. Insula island, comes from the Langerhans Peninsula of the pancreas through B cells (β). It's thought to be the body's transport of substances absorbed by the digestive system to the cells: muscle (myocytes), fat (adipocytes) and liver (hepatocytes). It was discovered in 1922 and its blood from the blood of discoverer Frederick Banting was awarded a prize a year later.
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