Chmiel · Psychiatria polska 2022 · case report and narrative review · n=1

Ketogenic diet in therapy of bipolar affective disorder - case report and literature review.

Level 4 - case-series / case-control

Individual clinical case report with a narrative literature review

PubMed 37098202 · doi:10.12740/PP/OnlineFirst/136356 · record verified 2026-08-26

What was done

The authors presented a single case report of a male patient with bipolar affective disorder (BPAD) who had failed to achieve euthymia with lamotrigine monotherapy or combined treatment with quetiapine. The patient was placed on a ketogenic diet, accompanied by a narrative review of proposed neurobiological mechanisms.

What was found

Following the introduction of the ketogenic diet, the patient achieved full remission of the disorder, allowing for a reduction in lamotrigine dosage and the complete discontinuation of quetiapine. The abstract reports no numerical outcome scores, biomarker levels, or duration of follow-up.

Why it matters

It highlights the potential role of dietary metabolic interventions as an adjunctive strategy for individuals with treatment-resistant bipolar disorder, warranting formal clinical trials.

Limits

Findings are limited to a single uncontrolled case report (n = 1) and narrative review. No quantitative psychiatric rating scales, objective markers of ketosis, dietary adherence data, or follow-up timelines are reported in the abstract.

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