How Does HGH (Human Growth Hormone) Work?

Human growth hormone (HGH) is a protein produced in the body that’s important not only during childhood but also throughout adulthood. Growth hormone is produced by the pituitary gland, which is known as the “master gland” because it secretes many hormones that control the actions of other glands. A part of the brain called the hypothalamus sends signals to the pituitary gland to produce GH, which then travels through the bloodstream to function in other parts of the body.

HGH stimulates the epiphyseal growth plates in the bone, which are responsible for bone elongation. GH also triggers the release of the insulin-like growth factor-I (IGF-I) protein, which stimulates the growth of bone, muscle and other tissues in response to GH and also, in turn, regulates GH release from the pituitary.