Abstract Title:

What made Canada become a country with the highest incidence of inflammatory bowel disease: Could sucralose be the culprit?

Abstract Source:

Can J Gastroenterol. 2011 Sep ;25(9):511. PMID: 21912763

Abstract Author(s):

Xiaofa Qin

Abstract:

Inflammatory bowel disease (IBD) (which includes both ulcerative colitis and Crohn’s disease [CD]) emerged and dramatically increased in the past century (1). Early studies revealed that IBD was most prevalent in countries such as the United Kingdom, the United States and those in northern Europe (1). Compared with these countries, the prevalence of IBD in Canada was much lower. This was demonstrated in early epidemiological studies conducted in Canada. According to a review by Mayberry and Rhodes (2), a study published in 1972 reported the incidence and prevalence of CD in Sherbrooke, Quebec, at only 0.7 and 6.3 per 100,000 population, respectively, which were much lower than countries such as the United Kingdom, the United States, Sweden, Denmark, and even Israel and New Zealand at the same time or even decades earlier. However, studies in recent years have suddenly found that Canada has become a country with the highest incidence of IBD (3). For example, the prevalence of CD in Alberta in 1981 was only 44 per 100,000 population (4), compared with 91 per 100,000 in Olmsted County, Minnesota (USA) on January 1, 1980 (5). However, the prevalence of CD in Alberta increased to 283 per 100,000 on July 1, 2000 (3), compared with 174 per 100,000 in Olmsted County in January 1, 2001 (6). It would be valuable to know what caused the dramatic increase of IBD in Canada because it may provide critical information regarding its etiology.

A decade ago, a series of accidental findings made me suspect that the impaired inactivation of digestive proteases due to the inhibition
of gut bacteria by dietary chemicals, such as saccharin, play a causative role in IBD as a result of the accelerated degradation of the mucous layer and underlying endothelium (7). It provided an explanation for many puzzles in IBD such as the dramatic increase of IBD in the 1950s and 1960s, and its levelling off since the latter part of the 1970s, as observed in many western countries including Canada (4,7). However, this hypothesis was challenged by the failure to provide an explanation for the recent high incidence of IBD in Canada, which had adopted more stringent standards for the use of saccharin than most other western countries after the finding of carcinogenic effects of saccharin on the bladders of experimental animals in 1977.


If not saccharin, then what caused the remarkable increase of IBD in Canada? I suggest that sucralose may be the culprit. Sucralose is a new, non-nutrient, high-intensity sweetener that has many superior properties. It is approximately 600 times sweeter than sucrose (thus two times sweeter than saccharin). Similar to saccharin, sucralose is heat and pH stable, but without the bitter aftertaste (8). In 1991, Canada was the first country to approve the use of sucralose, and it was allowed to be used as a tabletop sweetener in breakfast cereals, beverages, desserts, toppings, fillings, chewing gum, breath mints, fruit spreads, salad dressings, confectionary, bakery products, processed fruits and vegetables, alcoholic beverages, puddings and table syrups (8).

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Study Type : Review

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