Answer: Endangered species are species whose populations are dwindling in numbers and are in danger of becoming extinct. Extinct species are ones who have no documented individuals left and are therefore believed to no longer exist.
Growth hormone is produced by the pituitary gland, a small gland like a bean, located in the lower part of the brain. As the name says, this hormone is absolutely essential for providing physical growth. However, this hormone also has an influence on the body's metabolism.
It was already known that GH is linked to bone development and height increase and is found in large quantities in muscles, liver, tissues and organs directly involved in growth metabolism. After some scientific studies and experiments, it was discovered that the brain is also full of receptors for this hormone.
Previously, leptin was believed to be the main hormone to work to conserve energy in cases of dietary limitations. When there is weight loss, circulating leptin levels in the bloodstream fall. Leptin is a hormone produced by the body's cells that store fat. When leptin levels start to lose fat, the levels drop a lot and the brain feels this drop and activates the hunger and energy saving mechanisms.