The Claim
In adults with Alzheimer's disease, daily supplementation with 20 grams of creatine monohydrate for 4 and 8 weeks results in a significant increase in serum creatine levels, which is correlated with increased brain creatine levels, demonstrating systemic absorption and partial penetration of the blood-brain barrier.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In adults with Alzheimer's disease, taking 20 grams of creatine monohydrate daily for 4 to 8 weeks increases creatine levels in the blood and also increases creatine levels in the brain, showing that the supplement enters the bloodstream and partially crosses into the brain.
See the scientific wording
In adults with Alzheimer's disease, serum creatine levels rise significantly after 4 and 8 weeks of daily 20-gram creatine monohydrate supplementation, and this increase correlates with higher brain creatine levels, indicating systemic absorption and partial blood-brain barrier penetration.
When a person takes creatine pills, the creatine enters the bloodstream, travels to the brain, and gets pulled inside brain cells through a specific transport system. Once inside, it turns into phosphocreatine, which helps brain cells make more energy quickly when they need it.
What the research says
1 studyStudy: Creatine monohydrate pilot in Alzheimer's: Feasibility, brain creatine, and cognition
When people with Alzheimer’s took 20 grams of creatine daily for 8 weeks, their blood creatine went up, and so did the creatine in their brains — meaning the supplement got from their blood into their brain.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.