RESEARCH MONOGRAPH · KDC-MN-400
Beta-Hydroxybutyrate (BHB)
Beta-hydroxybutyrate (BHB) is the principal ketone body, made by the liver during fasting, ketogenic dieting, prolonged exercise, or insulin deficiency. It does several distinct jobs: as a metabolic fuel oxidized by brain, heart, and muscle; as an endogenous inhibitor of class I HDACs (a class of enzymes that silence genes); and as a ligand for the HCA2 receptor. That mix of roles makes it interesting beyond just an alternative energy source. Approved use is the historical ketogenic diet for refractory pediatric epilepsy, but research interest extends into Alzheimer, Parkinson, cognition, longevity (mTOR and autophagy), and endurance performance. Exogenous BHB salts and the more sophisticated ketone monoester (HVMN, Delta G) are sold as ergogenic supplements with mixed real-world performance data. The signaling-metabolite story is more compelling than the supplement story. Not stocked by Kodiac. This monograph is provided for research and educational reference.
Intrigue 0–100 blends mechanism novelty, evidence strength, and translational potential. Kodiac editorial, not peer-reviewed.
Endogenous ketone body / signaling metabolite
Beta-hydroxybutyric acid; the principal endogenous ketone body; a metabolic fuel and HDAC inhibitor with cognitive and longevity research interest.
Abstract
Beta-hydroxybutyrate (BHB, (R)-3-hydroxybutyric acid; CAS 625-72-9; molecular formula C4H8O3; molecular weight 104.10) is the principal endogenous ketone body, produced by hepatic mitochondrial beta-oxidation of fatty acids during fasting, ketogenic dieting, prolonged exercise, or insulin deficiency. The compound serves multiple roles: as a metabolic fuel substrate for brain, heart, and skeletal muscle (oxidized via beta-hydroxybutyrate dehydrogenase to acetoacetate, then to acetyl-CoA for TCA cycle entry); as an endogenous HDAC inhibitor (specifically class I HDACs at low millimolar concentrations); and as a ligand at hydroxycarboxylic acid receptor 2 (HCA2/GPR109A). Approved clinical use is the historical ketogenic diet for refractory pediatric epilepsy. Research interest spans neurodegenerative disease (Alzheimer, Parkinson), cognition, longevity (mTOR/autophagy modulation), and exercise performance (ketone supplementation in endurance sport). BHB salts (Ca, Na, Mg, K salts) and esters (1,3-butanediol esters of BHB) are sold as ergogenic supplements; the ketone monoester (HVMN Ketone, Delta G) is the most thoroughly studied. Plasma half-life of exogenous BHB is approximately 1 to 3 hours depending on formulation. Used as the canonical ketone body in metabolic and longevity research.
Mechanism of action
Endogenous ketone body; metabolic fuel substrate plus HDAC inhibition (class I) plus HCA2 receptor agonism. Multifactorial signaling beyond bioenergetic role.
Reported research dose ranges
Reported research dose ranges vary across the published literature.
References
- Newman JC, Verdin E. beta-Hydroxybutyrate: a signaling metabolite. Annu Rev Nutr 2017.
- Cox PJ, et al. Nutritional ketosis alters fuel preference and thereby endurance performance in athletes. Cell Metab 2016.
- Veech RL. The therapeutic implications of ketone bodies. Prostaglandins Leukot Essent Fatty Acids 2004.
Read the full monograph
Available as a research-use-only PDF download.
The full reference document is provided strictly for research use only. It reports research dose ranges from the published literature, not instructions for use in humans or animals.
FOR RESEARCH USE ONLY. Not for medical, diagnostic, or therapeutic purposes. Not for human consumption. All information is provided for research and educational purposes only.