Health Aging Muscle Stem Cells: Protection Comes at a Cost by Dr Natalie Singh - Health Editor July 3, 2026 by Dr Natalie Singh - Health Editor July 3, 2026 Aging muscle stem cells accumulate a protein called NDRG1, which slows down tissue repair but enhances cellular survival, according to a study published in the journal Science. Researchers at UCLA … 0 FacebookTwitterPinterestEmail