Feb 1, 2025

Feb 1, 2025

Feb 1, 2025

Exogenous D-β-hydroxybutyrate Lowers Blood Glucose by Reducing L-Alanine Availability for Gluconeogenesis

Exogenous D-β-hydroxybutyrate Lowers Blood Glucose by Reducing L-Alanine Availability for Gluconeogenesis

Exogenous D-β-hydroxybutyrate Lowers Blood Glucose by Reducing L-Alanine Availability for Gluconeogenesis

This study reveals a novel mechanism by which exogenous ketones lower blood glucose: by reducing the availability of the amino acid L-alanine, a key substrate for gluconeogenesis. In a randomized crossover trial, healthy volunteers consumed a ketone ester drink with or without L-alanine. Ketosis significantly reduced glucose levels, but this effect was blunted when L-alanine was supplemented. The findings suggest that ketone-induced reductions in L-alanine limit the liver’s ability to produce glucose, offering a compelling metabolic explanation for ketones' glucose-lowering effects and reinforcing their therapeutic potential in type 2 diabetes.

This study reveals a novel mechanism by which exogenous ketones lower blood glucose: by reducing the availability of the amino acid L-alanine, a key substrate for gluconeogenesis. In a randomized crossover trial, healthy volunteers consumed a ketone ester drink with or without L-alanine. Ketosis significantly reduced glucose levels, but this effect was blunted when L-alanine was supplemented. The findings suggest that ketone-induced reductions in L-alanine limit the liver’s ability to produce glucose, offering a compelling metabolic explanation for ketones' glucose-lowering effects and reinforcing their therapeutic potential in type 2 diabetes.

Summary of

Exogenous D-β-hydroxybutyrate Lowers Blood Glucose by Reducing L-Alanine Availability for Gluconeogenesis

By

Adrian Soto-Mota

Adrian Soto-Mota

, et al.

, et al.

Purpose

To determine whether exogenous D-β-hydroxybutyrate (BHB) lowers blood glucose by reducing plasma L-alanine, a key gluconeogenic substrate.

Methods

In a randomized crossover trial, healthy adult participants consumed a ketone monoester drink (ΔG®) either alone or with added L-alanine. Plasma levels of BHB, glucose, and amino acids were measured over time to assess metabolic effects.

Results

BHB ingestion significantly increased plasma BHB levels and reduced both blood glucose and plasma L-alanine concentrations. When L-alanine was co-administered with BHB, the glucose-lowering effect was attenuated, suggesting that BHB limits gluconeogenesis in part by depleting substrate availability.

Conclusion

Exogenous BHB lowers blood glucose by reducing plasma L-alanine, thereby limiting hepatic gluconeogenesis. This mechanism may underlie ketones’ therapeutic potential in managing blood sugar without triggering hypoglycemia or requiring insulin.

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If you want to restore your metabolic health, defeat that midday slump or achieve your personal best, Tecton Ketones is launching a range of specifically formulated products to help reach your goals.