Chapter 9 · The History and Evidence
What Research Establishes—and What It Does Not
Human research establishes rectal caffeine absorption and provides several clinical signals, while direct evidence for the complete detoxification mechanism remains incomplete.
Summary
The concise reading
Scott brings together more than eighty papers and historical source documents, including translated international material. He discusses caffeine absorption, constipation and bowel-preparation findings, the Thai antioxidant study, wider Korean reports, related coffee chemistry, and safety. He distinguishes serum glutathione from GST enzyme activity and explains both the findings and the questions still open.
“When people say there is no research on coffee enemas, what they usually mean is that there isn’t one large modern clinical trial that answers every question at once.”
How to cite this passage
Wilson, Scott A. “What Research Establishes—and What It Does Not.” Coffee Enemas: The Evidence, the History, and the Practice. S.A. Wilson Inc., forthcoming. Summary and excerpt revised September 15, 2026.
Source and interest disclosure
This page summarizes Scott A. Wilson’s chapter or reference section and reproduces a short verbatim excerpt. Scott is the founder of S.A. Wilson’s Gold Roast Coffee and has a commercial interest in Gold Roast and ZeroPrep. The chapter distinguishes his experience and company records from independent research, laboratory findings, historical sources, and third-party statements.
The book presents coffee enemas positively as a detoxification practice. It does not claim that coffee enemas, Gold Roast, or another coffee cure, treat, prevent, diagnose, or mitigate disease.