Very‐low‐carbohydrate diet enhances human T‐cell immunity through immunometabolic reprogramming

Summary

This study demonstrates that ketone bodies, produced endogenously during very-low-carbohydrate diets, profoundly enhance human T-cell immunity through immunometabolic reprogramming. Using both in vitro models with primary human T cells and an intervention trial with healthy volunteers, the authors show that ketone exposure enhances CD4+, CD8+, and regulatory T-cell capacity, augments T memory cell formation, and shifts cellular metabolism towards mitochondrial oxidative metabolism with improved respiratory reserve and energy supply. The findings suggest potential therapeutic applications of very-low-carbohydrate dietary approaches to strengthen human immune function.

Regional applicability

The study was conducted with human subjects and primary cells, with mechanisms likely transferable to United Kingdom populations, though the intervention's practical implementation within UK dietary guidance and NHS clinical practice would require further evaluation against current nutritional recommendations for different population groups.

Key measures

CD4+ and CD8+ T-cell capacity; regulatory T-cell capacity; T memory cell formation; RNAseq gene expression; mitochondrial oxidative metabolism; respiratory reserve; cellular energy supply; reactive oxygen species signalling

Outcomes reported

The study investigated effects of ketone bodies on human T-cell responses using both in vitro primary T-cell models and an immuno-nutritional intervention in healthy volunteers. It measured CD4+, CD8+, and regulatory T-cell capacity, T memory cell formation, and performed RNAseq and functional metabolic analyses.

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