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Diverticulosis coli is of very low prevalence in the countries such as Korea, China, Africa, Iran and other Third word countries (1). Does somebody may believe that the high fiber diet may be the common factor for all these countries, explaining the low prevalence of diverticulosis coli? Does somebody believe that the low fiber diet is really exist in USA and is a causative factor of diverticulosis coli with prevalence rate of 60%? In the two recent studies it was shown that the average man with normal bowel function on the usual diet strains twice more in the sitting, than in the squatting posture (2, 3). Basing on these studies it can be said with certainty that the only real relevant factor that separates the Third word and Western countries is not a type of food but a kind of defecation appliances, the squatting in Third word and the sitting in Western countries. The expulsive intra-rectal pressures during defecation effort a great and may reach 200mmHg (4). The authors of fiber diet hypothesis on the cause of diverticulosis coli have suggested that fiber deficient diet renders the colonic content more viscous and thus harder to propel what build up higher inracolonic pressures which eventually cause herniation out of the mucosa and submucosa forming diverticula's (5). But as the amplitude of motility waves of the colon is small (as 10mmHg), very far from 200mmHg of expulsive intra-rectal pressures during defecation, the authors invented the motility index (a product of wave amplitude and the duration of motor effect) in order to explain their hypothesis. The absolute numbers with such arithmetic drill were of cause greater but it is quite not relevant (6). In order to destroy the elastic tissue of the colonic wall it have to be a great and repeated blows on the colonic wall and which are indeed existing when man repeatedly and excessively strains to empty the rectum during defecation in the sitting posture. This also explains the fact that the great majority of diverticuls are in the sigmoid colon, colonic segment that is in the close vicinity to the rectum, the epicenter of the expulsive pressures. It can be conclude that defecation in the sitting posture is self destructive, causing distally to the rectum (the epicenter of the expulsive pressures) the hemorrhoids and proximally to the rectum the bulging out of the diverticula's in the sigmoid colon (the" hemorrhoids" of the sigmoid colon). Because of methodological problems it is impossible in a direct trial to confirm the role of the sitting defecation posture in the causation of diverticulosis coli, but this have done in regard of hemorrhoids and the article is published on this site. Finally the advice to switch to the squatting defecation posture is now not merely theoretical; a new squatting device was designed and tailored for the sewage system of the Western world (see on the page "video-film of a new squatting device")
History of hemorrhoid research it is a history of great mistakes. History of treatment of hemorrhoids is a history of needless and invasive treatment.Restore Text
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