Clinical Research Directory

Exogenous Ketosis in a Fed and a Fasted State

Sponsor: University of Oxford

Summary

The kinetics of circulating βHB following ingestion of the ketone monoester are dependent on several variables that determine the balance between appearance into, and disappearance from, the bloodstream. These dynamics have been well characterised in fasted humans but in the real world the ketone monoester is likely to be ingested in a fed state, pertinently within athletic spheres consumption would proceed a substantial high-carbohydrate meal. Within this, it is unclear how metabolism under exogenous ketosis might be affected in a fed versus fasted state. This four-arm crossover study looks to characterise the relationship between feeding status, βHB pharmacokinetics, and resting metabolism. As exogenous ketosis is known to reduce circulating glucose levels, this study will also explored if hepatic metabolism - for example, de novo lipogenesis - might consequently be altered, with implications for metabolic disease states such as Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD) and type II diabetes. Participants will be asked to consume either the ketone monoester drink or a placebo drink when fasted and when having previously consumed a meal.

Official title: Characterizing the Influence of Exogenous Ketosis on Circulating and Hepatic Metabolism in a Postprandial and Postabsorptive State in Adults Free From Metabolic Disease

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