Undoubtedly, the most extensive study and the most comprehensive data concerning HGH has come about from the efforts of two men, Dr. Edmund Chein, Palm Springs Life Extension Institute and Dr. Leon Cass Terry, University of Wisconsin.

Both men came to their involvement with HGH via personal experience.

In the case of Dr. Chein, that personal experience began with chest pains in his out of shape body. He had a pot belly, high levels of cholesterol and triglycerides, and a partially blocked coronary artery. In Dr. Chein's words: "I was aging, I was in pain, and my cardiologist warned me to cut back on work or risk devastating health problems." His cardiologist also suggested he go on medication that would lower his cholesterol.

Dr. Chein, who had been working with patients recovering from injuries that had also damaged various glands, saw first hand the beneficial results of hormone replacement therapy. Patients on hormone replacement quickly regained lost energy, endurance, and muscle strength. And although aware of the efficacy of melatonin and DHEA replacement in slowing the process of aging, nothing had impressed him so much as learning about HGH and Dr. Rudman’s study. Only with HGH had there been observed effects such as to suggest that the aging process was not only being retarded, but in some aspects, was actually being reversed.

Taking the biblical injunction (Physician, heal thyself) to heart, Dr. Chein embarked on a program of total hormone replacement. Tests had shown that in many instances his hormone levels were low, some extremely so. Dr. Chein reasoned that if he could bring these hormone levels back to what they had been when he was a 20 year old, then the rest of his physiology should follow suit, and his body should self-correct.

His reasoning proved to be right on target. Within six months the chest pains had abated, his cholesterol and triglyceride levels were now normal, and he was even losing his pot belly. He had become a believer.

So strongly convinced was he that hormone replacement was the best way to combat the aging process - especially in the case of HGH - that in 1994 he opened the Palm Springs Life Extension Institute. As he put it: "...hormone replacement therapy is the best option open to us today to prevent the diseases and other side effects of aging."