Human Growth Hormone (HGH) is the most abundant hormone produced by one of the endocrine glands: the pituitary gland. This gland is located in the center of the brain. HGH is also a very complex hormone. It is made up of 191 amino acids - making it fairly large for a hormone. In fact, it is the largest protein created by the Pituitary gland.

HGH secretion reaches its peak in the body during adolescence. This makes sense because information on human growth hormone helps stimulate our body to grow. But, HGH secretion does not stop after adolescence. Our body continue to produce HGH usually in short bursts during deep sleep.

Growth Hormone is known to be critical for tissue repair, muscle growth, healing, brain function, physical and mental health, bone strength, energy and metabolism. In short, information on human growth hormone is very important to just about every aspect of our life!

Researchers studied the normal levels of HGH patterns in adults. At age 21, the normal level of HGH is approximately 10 milligrams per deciliter of blood. After age 30, the secretion rate drops by 14 percent, every 10 years. By the age of 61, the human growth hormone is diminished by 80 percent, down to 2 milligrams. Over the age of 75, the body barely produces enough HGH to build a toenail. The decreased level of human growth hormone is the primary reason for stunted healing in elderly individuals.