New research shows that the popular gym supplement creatine may help some people with depression—but not everyone. A systematic review of five randomized controlled trials found that adding 5 grams of creatine daily to standard antidepressants or therapy significantly reduced symptoms in adult women with major depressive disorder, with a large effect size (Cohen's d = 1.13). However, creatine showed no benefit for treatment-resistant patients, adolescent girls, or those with bipolar depression, and even triggered mania in two bipolar patients.
The Research
Led by Bassam Jeryous Fares at the University of Ottawa, the review analyzed six published reports covering five trials across South Korea, the US, Brazil, Israel, and India (238 participants total, average age 36, mostly women). Two trials—both in women with major depressive disorder—found that creatine plus escitalopram or cognitive behavioral therapy produced steep symptom drops. But three other trials found zero benefit: creatine failed in treatment-resistant adults, showed no effect in adolescent girls, and was ineffective (and risky) for bipolar depression. The findings appear in Brain Medicine.
Why It Matters
The brain is an energy hog, using about 20% of the body's calories. Creatine helps cells generate ATP—the energy currency—so boosting brain creatine levels could theoretically improve mood. But these mixed results highlight that depression is not a single condition. The strongest benefit emerged in adult women, possibly due to sex differences in creatine metabolism. The mania risk in bipolar patients is a crucial safety warning.
What You Can Do
If you're an adult woman with depression, talk to your doctor about whether creatine (5 g/day) might complement your treatment. But don't self-treat: creatine is not a cure-all, and it can be dangerous for bipolar disorder. For cognitive health, prioritize sleep, exercise, and a balanced diet—proven energy boosters for your brain.
Source: Neuroscience News
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