As humans grow older, they lose strength and muscle mass.  Skeletal muscle weakness and atrophy are among the most pervasive and disruptive effects of aging. In nearly all people, even elite athletes, a subtle loss of muscle strength begins between the ages of 30 and 40. Over the next 2-3 decades, strength continues to erode while muscle mass typically declines to a lesser degree. As … Continue reading Researchers identify precise cause of muscle weakness and loss due to aging.