Answer
Age related loss of muscle mass (sarcopenia) may begin as early as age 30 in the sedentary persons. Changes in secretion and serum levels of several hormones may influence sarcopenia. These include thymus hormones, testosterone, thyroid hormones, and human growth hormone (hGH).
Work Step by Step
Although the decline in hGH secretion is neither rapid nor dramatic with advancing age , the lower serum levels of this hormone are associated with age-related loss in muscle mass.
