Scientists are exploring whether creatine, a popular muscle-building supplement, could also combat depression by enhancing the brain's energy supply, according to a ScienceDaily report. A review of five randomized clinical trials involving 238 participants found contradictory outcomes.
The potential mechanism hinges on creatine's role in cellular energy production, which might help correct energy deficits linked to depressive symptoms. This hypothesis builds on earlier observations that brain energy metabolism is often disrupted in depression.
Two of the five trials, both focusing on women with major depressive disorder, showed that adding creatine to standard treatment improved symptoms. However, three other studies found no meaningful benefit, leaving the overall evidence mixed.
The findings suggest creatine might help a subset of patients, particularly women, but the review underscores the need for larger, more targeted trials. Researchers caution against self-medicating with creatine for depression until clearer guidelines emerge.
The review calls for standardized dosing and longer study durations to clarify creatine's potential role in depression care. Skeptics note that small sample sizes and variability in trial design limit the conclusions.