Metabolic plasticity: an evolutionary perspective on metabolic and circadian dysregulation in bipolar disorder.
Level 5 - mechanism / opinion, no new human data
Narrative review and evolutionary hypothesis paper with no primary human data
PubMed 40681844 · doi:10.1038/s41380-025-03123-9
What was done
This is a narrative review and theoretical framework paper synthesizing literature at the intersection of metabolic psychiatry, circadian biology, and evolutionary biology. The authors examine how seasonal metabolic adaptations conserved across taxa relate to bipolar disorder pathophysiology, focusing on shared biological pathways including insulin signaling (GSK3β, Akt, phosphatidylinositol cycle), clock genes (CLOCK, BMAL1), metabolic sensors (mTOR, AMPK), and hormonal signaling (melatonin, cortisol).
What was found
The abstract reports no primary experimental data, quantitative outcomes, or statistical metrics. It describes qualitative seasonal patterns (such as mania occurring more frequently during rapid spring and autumn photoperiod shifts and depression during winter photoperiod attenuation) and proposes that bipolar disorder involves dysregulation of conserved chronometabolic regulation influenced by modern inputs like artificial light at night and refined carbohydrate consumption.
Why it matters
The paper provides a unified evolutionary and chronometabolic framework connecting metabolic dysfunction and circadian rhythm disruption in bipolar disorder, offering conceptual targets for future mechanistic and therapeutic research.
Limits
The paper is purely conceptual and hypothesis-generating; it contains no original empirical human data, quantitative synthesis, or systematic search methodology. The proposed evolutionary mismatch mechanisms remain theoretical until validated in controlled clinical or experimental studies.
Cited by
- supports Metabolomic differences observed in bipolar patients involve altered insulin signaling networks, specifically the phosphatidylinositol cycle, Akt, and mTOR.