Does hormonal decline cause aging?
[top] Yes. After we reach the age of 20, the endocrine system (the system of glands that produce hormones) slowly loses its capacity to maintain hormone production. There appears to be a built in self-destruct mechanism programmed into our genetic timetable; our genetic programming is designed to maintain us optimally through the reproductive years and then slowly cause progressive decay. This decrease in hormone production that starts at the age of 20 is now felt to be one of the prime causes of the aging process.