Ultimate HGH 1000 or human growth hormones controls the release of many other hormones in the body and is made by the pituitary gland in the centre of the brain. During childhood, HGH directs the growth of the body. When you are an adult, HGH begins to decline with age. The decline is associated with many of the effects of aging. Hundreds of studies have been done on the use of HGH in adults. It has been found to raise energy levels, enhances lean muscle, decreases body fat, strengthens the heart, improves cholesterol, fortifies bones, smoothes out wrinkles, sharpens memory, improves sexual function, regenerates damaged tissues, boosts the immune system, and improves sleep.