TO THE EDITOR: I read with great interest the paper entitled “Relationship between intestinal gas and the development of right colonic diverticula” by Jang et al, which was published in the October 2010 issue of Journal of Neurogastroenterology and Motility. Hydrogen (H2) and methane (CH4) are gases produced in the colon by the breakdown of carbohydrates, due to the action of anaerobic methanog...