() (also called ) is a hormone produced by the brain’s pituitary gland, it controls muscle and bone growth and lowers the amount of fat in the body. HGH is the primary hormone responsible for growth in humans and it helps regulate metabolism. Growth hormone releasing hormone (GHRH) and ghrelin (a hormone produced by the stomach) stimulate HGH release. Insulin-like growth factor () is produced by the liver in response to HGH. Most of the growth promoting effects of growth hormone are due to the action of . Human Growth Hormone is released primarily during slow wave sleep and in response to exercise. Many factors lead to variations in the amount of growth hormone released including levels of glucose, fatty acids level, levels of various neurotransmitters, hormones and amino acids.

HGH plays major role to stimulate the liver and other tissues to secrete IGF-1. IGF-1 stimulates the proliferation of chondrocytes (cartilage cells), resulting in bone growth.  IGF-1 also appears to be the key player in muscle growth. It stimulates both the differentiation and proliferation of myoblasts. It also stimulates amino acid uptake and protein synthesis in muscle and other tissues.

Benefits of HGH (Human Growth Hormone):

• Sharper vision
• Improve mood
• Younger & thicker skin
• Fewer wrinkles
• Stronger bones
• Increased lean body mass
• Lowered body fat
• Higher the energy levels
• Enhance sexual performance
• Strong immune system
• Greater cardiac output