Age-related muscle loss, or sarcopenia, is a natural part of the aging process, but one that can also be attenuated with targeted nutritional intervention. Sarcopenia greatly reduces quality of life and shortens life expectancy when not managed. Although the mechanisms of sarcopenia are not entirely understood, science suggests that older muscle has a subdued response to muscle-building (anabolic) stimuli and that older adults are probably not getting the protein they need to build and maintain muscle.