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Reports limited evidence for the gut microbiome as a treatment target in alopecia areata, suggesting the need for further investigation.
Interest in the gut microbiome as a therapeutic target for treating alopecia areata (AA) has grown considerably. However, existing evidence remains limited and inconsistent. Currently, there is insufficient evidence to recommend microbiome-directed testing and therapies to patients with AA. Rigorous longitudinal studies are needed before such interventions can be recommended.
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McMullen et al. (2026) studied this question.
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