A recent analysis has shed light on the varying effects of creatine supplementation on patients with depression, revealing a dual perspective: it works for some but not for others.
A systematic review published in the journal Brain Medicine evaluated five clinical studies involving a total of 238 participants across five countries. The findings present a clear ‘yes’ and ‘no’ simultaneously.
Positive Effects in Women with Major Depressive Disorder
Data appears especially promising for female patients suffering from Major Depressive Disorder (MDD). In two studies, researchers administered five grams of creatine daily along with the antidepressant Escitalopram. The results showed a significant reduction in depressive symptoms and an increase in remission rates.
The statistical effect size was noteworthy at 1.13 (Cohen’s d), indicating a strong impact. Creatine also demonstrated effectiveness when combined with cognitive behavioral therapy (CBT). The underlying theory posits that creatine supports energy metabolism in the brain, which could be beneficial specifically for women with MDD.
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No Effect and Potential Risks
Conversely, three studies found no significant improvement in specific populations, including treatment-resistant patients, adolescent girls, and individuals with bipolar depression. In these groups, outcomes were similar to those receiving a placebo.
More alarmingly, two bipolar patients developed hypomanic or manic symptoms while on creatine. Although the physical side effects were relatively minor—consisting mostly of gastrointestinal discomfort—the psychological risks pose a significant concern.
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No General Recommendations Yet
Researchers caution against drawing premature conclusions. The existing studies are sparse, participant numbers are limited, and the results are heterogeneous. Consequently, a widespread recommendation for creatine as a standard treatment for depression remains premature.
This leaves a clear call for further research: larger, long-term studies are essential to clarify the appropriate dosage and long-term safety. Creatine may emerge as a promising component in personalized psychiatric therapies, but it is not suitable for everyone.
