Making Old Muscle Young

Manipulating stem cells in old muscle can restore youth to aging tissue, according to research from the University of California, Berkeley. Scientists altered the activity of a molecular pathway to make stem cells in older tissue produce new muscle fibers at levels comparable to young stem cells. They say that their findings may one day lead to novel therapies for age-related diseases such as Alzheimer's and Parkinson's, as well as possibly to the reversal of the atrophying effect of aging.

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