näin reitesi vanhentuvat:

Sarcopenia seen in the magnetic resonance image of a cross section of a 25-year-old man's thigh (LEFT,) and another age 65 (RIGHT). Fat, in white, surrounds skeletal muscle encircling the bone. Notice that although the thighs are of similar size, the older man's shows a substantial loss of muscle and a growing buildup of fat around and through the muscle.