It has been argued that declining levels of which hormone help to explain the aging-out process?
A) estrogen
B) serotonin
C) testosterone
D) progesterone

Question

Quizplus · Accepted Answer

Testosterone levels decline with age in men, which has been associated with various aspects of the aging process, including decreases in muscle mass, energy, and libido. This hormonal change is part of what some researchers refer to when discussing the "aging-out" process.

It Has Been Argued That Declining Levels of Which Hormone