The Keto HDAC Myth — How One Paper Misled Millions for a Decade
Dr. Joseph Mercola - Take Control of Your Health · Dr. Joseph Mercola
January 14, 20267m 44s
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Show Notes
- A 2013 Science paper claimed beta-hydroxybutyrate (BHB), the primary ketone body produced during ketosis, was a potent histone deacetylase (HDAC) inhibitor with powerful epigenetic benefits — this claim became the foundation of the keto movement's health narrative
- A devastating 2019 head-to-head comparison in Scientific Reports found that BHB shows no detectable HDAC inhibition in vitro or in vivo, while butyrate (a different molecule produced by gut bacteria) demonstrates robust HDAC-inhibiting activity
- The bitter irony: ketogenic diets actually reduce colonic butyrate production by depleting fiber intake and diminishing butyrate-producing gut bacteria — the very diet designed to boost the "HDAC-inhibiting ketone" may be depleting the actual HDAC inhibitor
- While BHB has legitimate benefits as an alternative fuel source and GPR109A receptor activator, the widespread claim that ketosis provides "epigenetic therapy" through HDAC inhibition appears to be scientifically unfounded