Could Creatine Help Delay Cognitive Decline? Early Study Encouraging

For years, athletes and fitness enthusiasts have used the dietary supplement creatine to boost energy in their muscles and enhance physical performance. Now, emerging research suggests this common supplement might have benefits far beyond the gym, potentially offering a new avenue for supporting brain health in people with Alzheimer’s disease.

A recent pilot study has sparked interest in the scientific community by exploring whether creatine could help address cognitive symptoms associated with this neurodegenerative condition.

“Could a workout supplement actually help Alzheimer's disease? A new study shows … well, maybe," said G. Peter Gliebus, M.D., Chief of Neurology and director of Cognitive and Behavioral Neurology at Marcus Neuroscience Institute, part of Baptist Health, at Boca Raton Regional Hospital.  "The recent small study was evaluating whether the creatine supplements could help people with Alzheimer's disease.”

This preliminary research, conducted at the University of Kansas Medical Center, is the first of its kind to examine the effects of creatine on individuals with Alzheimer's. The primary goal was to determine if creatine supplementation was safe and practical for this group. However, the findings hinted at something more.

The Brain's Energy Crisis in Alzheimer's

To understand creatine's potential role, it's important to grasp how Alzheimer's disease affects the brain. One of the key issues in Alzheimer's is a breakdown in the brain's ability to produce and use energy efficiently. Brain cells, or neurons, require a tremendous amount of energy to function correctly, supporting processes like memory, focus, and problem-solving.

This energy is produced within tiny cellular powerhouses called mitochondria. Creatine, an organic compound found naturally in muscle and brain tissue, plays a vital role in this energy system. It acts as a shuttle, transporting energy from where it’s made to where it’s needed most.

Researchers theorize that by increasing the amount of creatine available to the brain, they might be able to help brain cells manage their energy needs more effectively, which could in turn improve cognitive function.

“One of the mechanisms or impairments in Alzheimer's disease is the diminished ability to use the brain’s energy,” Dr. Gliebus explains. “Creatine can actually help recharge this energy if it gets into the brain.”

What the Pilot Study Found

The study, known as Creatine to Augment Bioenergetics in Alzheimer's (CABA), involved 19 participants between the ages of 60 and 90 who had been diagnosed with Alzheimer’s disease. For eight weeks, each participant took 20 grams of creatine monohydrate daily, a higher dose than the standard 5 grams often used for athletic performance. The researchers chose this higher amount to increase the chances of the supplement crossing from the bloodstream into the brain.

The results were encouraging on several fronts. The supplementation was found to be safe and well-tolerated by the participants. More importantly, brain imaging confirmed that the approach worked as intended. After eight weeks, there was an 11 percent increase in creatine levels within the participants' brains.

“This was the first study to show that actually supplementing with creatine can increase creatine levels in the brain,” Dr. Gliebus notes. This is a significant step, as it confirms that an oral supplement can contribute to a boost in the brain's creatine reserves in people with Alzheimer's, the researchers asserted.

Moreover, the study observed moderate improvements in two key areas of cognition: working memory and executive function. Working memory is the brain's system for temporarily holding and managing information for short-term tasks, like following a multi-step recipe. Executive function refers to a set of mental skills that include focus, planning, and filtering out distractions. Both abilities are significantly impacted as Alzheimer's disease progresses.

Dr. Gliebus adds: "Some of those people (in the study) also showed Improvement in their memory." While not statistically definitive due to the study's small size, these positive signals provide a strong basis for further investigation, he adds.

A Promising but Preliminary Step

It is crucial to view these findings with perspective. The researchers and experts like Dr. Gliebus emphasize that this was a small-scale, preliminary study without a control group — a group that does not receive the treatment and serves as a baseline for comparison. Researchers caution that it is too soon to draw firm conclusions or recommend creatine as a treatment for Alzheimer's disease.

“This is a very small and early study. We definitely need bigger trials. We're waiting for further results,” cautions Dr. Gliebus.

Future research will need to involve larger groups of participants, include a placebo-controlled design, and run for longer periods to validate these initial findings. Scientists also hope to better understand the precise biological mechanisms at play. Beyond its role in energy metabolism, creatine may also help reduce inflammation and oxidative stress—a process involving harmful molecules called free radicals that contributes to brain aging.

Despite the need for more research, this pilot study opens an exciting new door. It highlights the intricate link between the body's metabolic health and the brain's cognitive function. “The study is a reminder of how well our brain and body are connected,” Dr. Gliebus said.