Jeremy's trainer should have taken a physiology class. If he had, he would know that the use of steroids (in addition to other problems) actually increases_____________________, which is counterproductive to improving bone density.
The answer is Parathyroid Hormone (PTH). Steroids reduce calcium
levels in the blood. This results in activation of the parathyroid hormone that
is essential in the metabolism of calcium
in the blood. PTH induces reabsorption of
calcium from bones to restore homeostasis
Ca2+ levels in the blood hence causing
osteoporosis. Osteoporosis causes an increased risk of bone fractures.
