What is a Human Growth Hormone – HGH?
HGH (somatotropin) is a protein hormone produced by cells called somatotrophs located at anterior pituitary gland – a major endocrine organ in the brain. HGH regulates growth and regeneration in the human body. HGH is released in pulses every 2-5hours and levels are highly affected by genetics, age, nutrition, activity and sleep. This hormone is responsible for growth spurts during puberty when its levels reach 20X the normal adult levels. It is also responsible for degeneration and aging when HGH levels begin to decline from the age of 30 and become almost none existent by the age of 50. Because HGH affects cell regeneration it is a master regulator of many functions in the body. HGH was first synthesized in 1982 using recombinant DNA technology and used in medicine for HGH replacement therapies since. Synthetic version of HGH is referred to as rHGH. Low levels of HGH in adults called Adult Growth Hormone Deficiency – AGHD. It can be caused by age, poor nutrition, injury, surgery, food toxins, lack of sleep and exercise.
HGH is also commonly used in sports to cope with high performance demands and to gain edge over the competitors, such as muscle size, strength and speed, injury recovery, stamina, low body fat. HGH increases regeneration of muscle, tendons and cartilage among many other tissues. HGH has a capacity to not only regenerate muscle tissue, but can also stimulate satellite cells (muscle stem cells) to increase a number of muscle cells or more accurately number of nucleus in the muscle fibers. This contributes to permanent size and strength growth capacity of muscles. For this reason it is preferred to anabolic steroids as latter has a temporary increase in muscle performance, harsh side effects and does nothing to increase performance capacity. It is also sometimes added to maximize performance and reduce side effects, such as loss of hair, libido, unwanted fat gain or acne.
Benefits of HGH in sports: