Exercise blocks aging muscle decline by silencing a key protein driver
New research shows that exercise helps prevent age-related muscle loss by suppressing the DEAF1 transcription factor that drives protein imbalance and triggering protective FOXO genes, which restore cellular repair and protein recycling. This balances mTORC1 activity to support maintenance rather than degeneration, with both resistance and aerobic training beneficial and a combination offering the greatest benefit. It’s never too late to start—regular activity can help older adults stay stronger and more mobile.