<prompt> Which of the following hormonal concentration decreases with age?ParathormoneFSHGrowth hormoneNorepinephrine  <response>: Secretion of growth hormone GH and IGF-1 levels decline during advancing years-of-life. These changes somatopause are associated with loss of vitality, muscle mass, physical function, together with the occurrence of frailty, central adiposity, cardiovascular complications, and deterioration of mental function.Ref: Ganong;s review of medical physiology; 24th edition; page no: 327 