Adam’s Journal
Here’s a question from a reader:
A friend has been diagnosed with Alzheimer’s disease. A neurologist mentioned a study about the positive effects of creatine supplementation for cognitive function. Could creatine help in Alzheimer’s?
Suzy Morgan
Dr. Scofield Prescribes
There actually have been two recent studies on this topic.
The first was a systematic review of 16 randomized trials of creatine involving nearly 500 adults. While none of the 16 studies involved participants with Alzheimer’s, all of them looked at the impact of creatine on cognitive function.
The review found that creatine produced a relatively small benefit for memory. It also seemed to improve response time on certain attention and information-processing tests. But it didn’t substantially improve overall cognition or executive function.
The second study is a clinical trial that looked specifically at creatine supplementation in people with Alzheimer’s. It produced some promising results, but the research had significant limitations.
In the study, 20 people with Alzheimer’s took a high dose of creatine daily for eight weeks. At the conclusion of the study, participants performed better on a series of cognitive assessments that measured cognition, memory and attention span. They also showed increased levels of creatine in the brain, may improve the brain’s energy reserves and, potentially, cognitive function.
This study, conducted by scientists at the University of Kansas, represented the first human trial of creatine in people with Alzheimer’s. But before we get too excited about its results, it’s important to understand why we shouldn’t read too much into them.
The study was small and lasted only eight weeks. There was no placebo arm of the trial – in other words, everyone received creatine – so researchers couldn’t compare the results to a similar group of patients who didn’t receive the supplement.
This last part is particularly relevant, because participants repeated the same tests to measure cognition. So, at least part of the improvements could have been attributable to what’s known as the practice effect, which simply means that you get better at something the more you repeat it.
To understand if these preliminary results are meaningful, we’d need a larger, randomized, double-blind, placebo-controlled trial. That trial should also last substantially longer than eight weeks and, if possible, measure not only test scores but also everyday function and disease biomarkers.
As a whole, research on creatine suggests that it might produce modest benefits for memory, particularly in older adults and people with low dietary creatine (like some vegetarians). However, the results are inconsistent.
The bottom line: creatine is promising enough to warrant further study – but at this point there’s insufficient evidence to recommend it as a treatment for Alzheimer’s.
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Dr. Hal Scofield is a physician-scientist at the Oklahoma Medical Research Foundation, and he also serves as Associate Chief of Staff for Research at the Oklahoma City VA Medical Center. Adam Cohen is OMRF’s senior vice president and general counsel. Send your health questions to contact@omrf.org.


