Clinical Report: The Role of the Lactate-HCAR1 Pathway in Exercise Psychiatry

Overview

This review explores the lactate-HCAR1 pathway as a potential mechanism linking exercise to inflammation-related depression.

Background

Exercise is recognized as an effective intervention for depression, yet the biological mechanisms behind its antidepressant effects are not fully understood. Traditional models focus on brain-centered pathways, which may not account for the complexities of inflammation-related depression.

Data Highlights

No numerical or trial data provided in the source material.

Key Findings

• Exercise-induced lactate acts as an immunometabolic signal rather than merely a metabolic byproduct.
• The lactate-HCAR1 axis connects exercise metabolism to immune regulation and inflammation-related depressive symptoms.
• Conventional exercise psychiatry often overlooks the heterogeneity of major depression and its inflammatory components.
• Future research should focus on lactate kinetics, inflammatory biomarkers, and immune cell phenotypes in relation to exercise.
• This framework is proposed as a testable hypothesis.

Clinical Implications

Further research is needed to validate this hypothesis and explore its clinical applications.

Conclusion

The lactate-HCAR1 pathway presents a novel perspective on the relationship between exercise and inflammation-related depression.

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