Creatine raise brain energy levels and slow Alzheimer's cognitive decline by 30%

# Summary Creatine, a supplement commonly used for muscle growth, crosses the blood-brain barrier and raises phosphocreatine levels in neurons, slowing early Alzheimer's cognitive decline by 30% according to recent research published in 2025. The brain relies on creatine to regenerate ATP, the energy molecule essential for neuronal function, and Alzheimer's patients show significantly depleted phosphocreatine levels and reduced creatine kinase activity. This finding suggests creatine supplementation could address the energy deficit underlying Alzheimer's progression, though this cognitive benefit has not been marketed to the millions of people who already take it for fitness purposes.