HGH after the age of 20
After the age of 20, HGH production declines in most, usually at the rate of 15% per decade. This decline in HGH level triggers the process called aging and factors affecting testosterone levels. Hair loss becomes more prevalent and nails and bones become more brittle. The skin begins to become thinner and loses its elasticity which causes it to become loose. At the age of 30, people have spent most of their lives with fairly high levels of human growth hormone (HGH). Daily secretion declines with age. For example a 20 year old may secrete 4 to 5 times more of the growth hormone than a 60 year old.
