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

Medical Research & Innovations Scientists found that the creatine supplement millions take for muscle gains is quietly raising brain energy levels and slowing early Alzheimer’s cognitive decline by 30% Daniel Okoro Science journalist Medical Research & Innovations · 8 min read Tens of millions of people take creatine every day. They bought it for their muscles. They measure their doses by how much weight they can add to a bench press or how quickly they recover between sets. Almost none of them know that the same supplement is crossing the blood-brain barrier, raising phosphocreatine levels in their neurons, and doing something to their cognitive function that the fitness industry has never advertised and most users have never been told. A comprehensive review published in the Journal of Psychiatry and Brain Science in 2025 , alongside a landmark pilot trial published in Alzheimer’s and Dementia : Translational Research and Clinical Interventions, has assembled the most complete picture yet of what creatine is quietly doing inside the brain. The findings span cognitive performance in healthy adults, depression treatment outcomes, sleep deprivation resilience, and most strikingly, a 30% slowing of cognitive decline in early Alzheimer’s patients in controlled trials. None of this is in the marketing on the tub sitting in most gym bags. Why the Brain Needs Creatine The brain is the most energy-demanding organ in the human body, consuming approximately 20% of the body’s total energy output despite representing only 2% of its mass. Neurons do not store meaningful energy reserves. They rely on a continuous supply of ATP, adenosine triphosphate, the molecule that powers virtually every cellular process from maintaining ion gradients across membranes to releasing neurotransmitters at synapses. Creatine plays a critical role in the energy metabolism of brain cells. After cellular uptake, creatine is converted into phosphocreatine, which is rap