Pathlogists examine 180 colonic biopsies from patients with ulcerative colitis and conclude that the colitis is caused by a chemical secreted from the colonic epithelium.
SHIELDS WARREN, M.D., and SHELDON C. SOMMERS, M.D.
https://pmc.ncbi.nlm.nih.gov/Read more

Report of ulcerative colitis in humans after hydrogen peroxide enemas.
C T Meyer, M Brand, V A DeLuca, H M Spir
March 3, 1981
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Seminal study showing mice unable to eliminate hydrogen peroxide develop colitis analogous to human ulcerative colitis.
R. STEVEN ESWORTHY,1 RICHARD ARANDA, MARTI´N G. MARTI´N, JAMES H. DOROSHOW,1 SCOTT W. BINDER, AND FONG-FONG CHU
Am J Physiol Gastrointest Liver Physiol
May 7, 2001
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Impairment of mitochondrial acetoacetyl CoA thiolase activity
in the colonic mucosa of patients with ulcerative colitis
Srikanth Santhanam, Aparna Venkatraman, Balakrishnan S Ramakrishna
https://pmc.ncbi.nlm.nih.gov/April 18, 2007
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Dr. Pravda indicating that hydrogen peroxide secreted by colonic epithelial cells is the cause of ulcerative colitis.
Pravda J.
World Journal of Gastroenterology
July 15, 2004
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Sustained Histologic Remission (Complete Mucosal Healing) 12 Years after One-Time Treatment of Refractory Ulcerative Colitis with Novel Combination Therapy: A Case Report
Jay Pravda , Richard Gordon and Pamela B. Sylvestre
Journal of Inflammatory Bowel Diseases and Disorders
June 30, 2020
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