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In a recent New England Journal Editorial titled: Sucralose and Erythritol -Not Too Sweet, the authors report basic research findings that illustrate artificial sweeteners in our food products appear to be affecting immune function (sucralose) as well as increasing platelet aggregation (erythritol).
This information has implications for tumor growth promotion and cardiovascular events. Further, gut bacterial host environments can be affected as well.
When I studied physiology in college and medical school, it was felt that the stomach and small intestine were sterile environments. Digestion occurred primarily through mechanical and chemical work on ingested food.
We are now learning that the small bowel does harbor a functioning microbiome (microbes that are biologically active and contributing to digestion as well as genetic expression, and epigenetic/biological function switches in the body).
The photo at the beginning of this article is from an article referenced in the editorial. This 45 page study, using sophisticated techniques measured metabolic, metabolomic, and microbial parameters over time as human subjects were exposed to 4 common "sugar substitutes".
They found that:
1) Saccharin and sucralose detrimentally affect glycemic (blood and cell sugar) response in humans.
2) Effects of saccharin, stevia, and aspartame on the microbiome correlate with glycemic effects.
Bottom line take home message:
Contrary to popular belief, artificial sweeteners are not sugar substitutes that have no affect on human metabolism. I recommend people not consume these products as there is basic science research indicating biological effects on immunity and glucose regulation. Further, it is demonstrated that people often gain weight when using these products.
The longer I practice medicine, the more I am realizing that the human digestion process is more like the ruminants (cows with multiple stomachs) than we ever thought. The food we eat gets acted upon by intestinal cohabitating bacteria and other microbes. This results in yet to be understood caloric efficiency differences between people. Immunologic and hormone regulation signaling are also altered. Even gene expression is affected by the gut bacteria in the human host. What we eat appears to affect how that process interacts.
For optimal nutrition and to assist in weight control, I recommend some basic strategies:
- Eat low to the ground- locally grown and fresh produce.
- Avoid packaged foods- they took the nutrients and added softeners/chemicals etc to get the product to you. This makes those sources calorie dense and nutrient poor.
- Buy organic when you can- and don't be fooled by incomplete labeling claims.
- Weigh yourself weekly. Don't drift upward.
- Drink a glass of water before and with each meal.
- Set reasonable activity/exercise goals and commit to them.
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