Prebiotics FOS & Inulin Not Recommended

Excerpts from: Article Source

1. What is FOS and Inulin?

Fructo-oligosaccharides (FOS) and inulin are types of fructo-polysaccharides, comprised of -(glucose-fructose)- subunits. The only difference between FOS and inulin is polymer chain length. Inulin/FOS also goes by the name of Neosugar, Alant Starch, Atlanta Starch, Alantin, Dahlin, Helenin, and Diabetic Sugar. Inulin tastes sweet, and it cannot be digested by humans, and it is soluble (unlike cellulose).

2. What does Inulin/FOS do?

Since Inulin/FOS is indigestible by our bodies, it gets transported to the large intestine where it feeds microbes and promotes fermentation. Inulin/FOS has been dubbed a "prebiotic", essentially serving as fertilizer for the bacteria in your colon.

Certain lactobacillus species of bacteria have been shown to preferentially ferment Inulin/FOS. For this reason, it is being promoted as a supplement to feed the good bacteria in our guts.

3. Inulin/FOS feeds only good bacteria, right?

Wrong. Manufacturers claim that Inulin/FOS specifically feeds only good bacteria. The reality of the situation is much different. If you examine the scientific literature about Inulin/FOS, you will find that this is untrue.

The best example is concerning Klebsiella. Recent studies have shown that Inulin/FOS encourages the growth of Klebsiella, a bacterium implicated in Ankylosing Spondylitis and increased intestinal permeability. Inulin/FOS may indeed promote the growth of lactobacillus bacteria, but what other potentially harmful bacteria are we feeding as well?

Furthermore, we have not even addressed the issue of yeast. Many different species of yeast are able to utilize Inulin/FOS for energy.

Historically, microbes have demonstrated the innate ability to adapt to almost any condition and fuel source. If bacteria can adapt to break down industrial solvents in our soil and use them for energy, it would be irresponsible to think that they will not adapt to utilize Inulin/FOS, a high energy carbohydrate.

There are hundreds of different species of bacteria and several yeast strains living in our GI tracts. Studies have only looked at the effects of Inulin/FOS on a handful of these microbes.

4. Why is Inulin/FOS being added to probiotic supplements and yogurt?

A key principle in today's marketplace is product differentiation. If a manufacturer can sell many different kinds of "specialty" products, that are in essence the same thing, it can make a larger profit.

Think about it for a moment. We no longer have plain old toothpaste, instead we have such items as tartar control, sensitive, baking soda, peroxide, whitening, gum care, and many others.

Adding a new claim to an old product adds to consumer excitement: "Brand X yogurt - now with Inulin/FOS for your health" & "We now offer lactobacillus capsules with Inulin/FOS." These new claims will help fight market stagnation and lead to greater profits for the manufacturer. But will FOS lead to greater health for the consumer?

5. Is Inulin/FOS found naturally anywhere?

Yes. It is found naturally in asparagus, garlic, Jerusalem Artichokes, chicory root, and others.

6. Since Inulin/FOS is found in natural foods it must be okay, right?

Wrong. Sucrose (table sugar) is naturally found in beets, sugar cane, oranges, and other plants. Humans have perverted this naturally occurring substance into a refined chemical. Sucrose is arguably one of the most unhealthy food additives in human history.

We should learn from our experiences with sucrose and apply them to Inulin/FOS. Instead of adding refined, super concentrated Inulin/FOS to your food, eat the foods that naturally contain Inulin/FOS.

The body is genetically adapted to certain foods and if we continue to mess with our food chain then our health will suffer the consequences. Of the nutritional fibers, cellulose was the most likely to be included in a traditional hunter gatherer diet.

Cellulose is an insoluble fiber that is slowly fermented by the microbial population in the human colon. Inulin/FOS is a soluble fiber that is quickly and easily fermented. The difference between cellulose (a food we are adapted to) and Inulin/FOS (a food we are not adapted to) is like the difference between a slow burning ember and a raging fire. Who likes playing with fire?

7. Is it possible to be allergic to Inulin/FOS?

Yes. In one documented case, inulin caused an anaphylactic reaction. As the use of Inulin/FOS as an additive in the food industry increases, reports of allergic responses will probably increase.Inulin may be behind more food allergies than is currently recognized.

8. What are the recognized side effects of ingesting Inulin/FOS?

Assuming one is not allergic to Inulin/FOS, the typical side effects will vary depending on one's level of tolerance. The list of known side effects include: flatulence, bloating, cramps, abdominal pain, and diarrhea. As Inulin/FOS permeates our food supply, the list of side effects is expected to grow.

Conclusion

In theory, a food additive that could specifically feed good bacteria might prove useful for intestinal health. Given the nature of the microbes and their ability to quickly adapt to various carbohydrate foods sources, it seems highly unlikely that such a chemical will be developed.

Inulin/FOS has been touted as such a molecule, but seems to fail the test as you examine it further. Even if Inulin/FOS did display specifity for beneficial bacteria, do we know enough about the complex microbial ecology of the human GI tract to deem a species of bacteria better than the others?

The digestive tract is much like a rain forest with a very complex web of life. What would happen to a rain forest if, in our arrogance, we decided to spread a chemical that fertilized one specific type of tree?

Would the overgrowth of one species be beneficial? Our GI tracts have adapted to house a variety of microbes and to disrupt this balance might be detrimental to our health. With these concerns, we recommend staying far away from any product with Inulin/FOS.

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