A molecule long associated with athletic ambition is being reconsidered as a quiet ally in the human experience of growing older. Creatine, which the body produces naturally and which supports cellular energy production, is now being studied for its potential to address the frailty, muscle loss, and cognitive decline that accompany aging — conditions for which medicine offers limited and often complicated remedies. The research is not yet conclusive, but the questions being asked represent a meaningful shift in how science approaches both the supplement and the passage of time.