One of the most important factors in osteoporosis is a lack of progesterone, which causes a decrease in new bone formation. (virginiahopkinstestkits.com)
Using light weights doesn't cause enough «pulling» action to stimulate new bone formation. (cathe.com)
Healthy bones adapt to the mechanical forces they encounter, with new bone formation and existing bone resorption constantly occurring to meet the body's needs. (sciencedaily.com)