// Science · Glossary

CBD Gastric Acid Conversion Debate

⚗️ Science First mentioned: Ep. 126

The scientific debate over whether CBD converts to THC and other cannabinoids (CBN, etc.) when exposed to gastric acid in the human stomach. In-vitro studies (2007, and a more recent Japanese study) showed CBD converts under acidic conditions with surfactants, but Dr. Ethan Russo and clinical data from a 700mg/6-week trial found no THC or THC metabolites in blood plasma, suggesting the conversion does not occur practically in the human body.

Mark Scialdone explained the thermodynamics: CBD + acid = chemistry you can't stop in a flask, but the body must have intervening mechanisms (oil phase absorption, mucosal transport, conjugation). The 2007 study by Watanabe showed four degradation products including CBN. Key question: was CBD administered in gel caps (reaching stomach acid) or sublingually (absorbed before stomach)? Russo presented findings at Simon Fraser University. Discussed across both EP126 parts.

Ep. 126 Hash Church CXXIII 123