This hormone is produced in the anterior pituitary, and serves to stimulate the growth and reproduction of cells, release of insulin-like growth factor 1 from liver.

Excess growth hormone can cause pituitary tumors are benign and grow slowly. Also can cause headaches, blurred vision, optic nerve pressure, excess jaw bone, fingers and toes, muscle weakness, insulin resistance. It can even lead to diabetes type 2 and decreased sexual function.

This hormone deficiency in children can cause growth failure and short body and delayed sexual maturity. While in adult growth hormone deficiency is rare, but in some cases can lead to obesity, decreased muscle mass and energy shortage and quality of life.

And in America, human growth hormone therapy is widely used as a weight loss program and to eliminate fat in the abdominal area, many people who perform injection therapy Human Growth Hormone (HGH). But in addition to extremely painful, the cost of injection therapy is also very expensive.