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Updated: Aug 23, 2026
Assessment of the Metabolic Effects of Isocaloric 2:1 Intermittent Fasting in Mice
Published on: November 27, 2019
Time-restricted eating, immunomodulation and ketone metabolism in humans
Natalie A Macheret1, Geethika P Thota1, Aaron Hengist1
1Section on Pediatric Diabetes, Obesity, and Metabolism, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD, 20892, USA.
Background:
Time-restricted eating (TRE) is a popular dietary strategy for supporting weight loss and immune metabolic health, but the underlying mechanisms are unclear.
Objective:
This narrative mini-review explores the mechanistic associations between TRE, immunomodulation, and ketone body metabolism, focusing on the potential role of ketones in mediating anti-inflammatory responses. Our goals were to synthesize the contemporary literature in humans to identify knowledge gaps that may inform future research directions.
Key Findings:
TRE modestly reduced pro-inflammatory markers and increased circulating ketone concentrations, although the magnitude of these effects was variable and often confounded by the metabolic changes associated with weight loss. Studies isolating TRE from caloric restriction remain limited, and no studies directly assessed the relationship between TRE-induced ketogenesis and immune modulation.
Conclusions And Future Directions:
Ketone bodies may play a key role in mediating the anti-inflammatory effects of TRE, offering a low-risk, non-pharmacological strategy to managing healthy weight and chronic inflammatory conditions. Future studies should prioritize controlled, isocaloric TRE interventions to better define the contributions of ketogenesis and immunomodulation to TRE's health benefits.
