Our well-being is uniquely tied to the condition of our colon, which is commonly unhealthy at diagnosis of celiac disease. To keep our colon healthy, we need to understand what happens there on a microscopic level. Hundreds of varieties of intestinal microbe populations called “flora” live there, numbering in the billions. To put these numbers into focus, dead bacteria make up about a third of each bowel movement. Our resident microbes, whether beneficial or harmful, play a decisive role in nourishing or damaging the cells that form the intestinal lining. Probiotic and prebiotic foods and supplements restore and feed our friendly microbes.
Probiotics are microbial foods or supplements that can be used to change or reestablish the intestinal flora to improve the health of the host (us). Prebiotics are non-digestible food products that stimulate the growth of symbiotic bacterial species, present in the colon, that improve the health of the host, according to the World Health Organization definition. Symbiotic means the flora get nourishment from us and we get nourishment from them.
In celiac disease, there are serious reasons to respect probiotic and prebiotic foods and supplements. Intestinal enzyme deficiencies, sugar intolerances and associated dysbiosis, or imbalance of intestinal flora, appear commonly.1 Research indicates that the metabolic activity of flora in celiacs is different from the general population and that it is a genuine phenomenon of celiac disease not affected by either the diet, the inflammation, or the autoimmune status of the patient.2 In addition, the severity of disturbances in intestinal balance of flora was found to depend on the gravity of the patient's state.3
Before treatment with a gluten-free diet, the immune reaction within the small intestinal lining causes inflammation and damage to the delicate structures of the lining, leading to failure to digest and absorb nutrients. Unabsorbed nutrients pass into the colon where their unnaturally large presence brings about colon dysfunction with stool changes.
The arrival of large quantities of undigested fat, carbohydrates and protein into the colon along with poor gut motility and certain nutrient deficiencies cause microbial imbalances in these ways:
1. Maldigestion results from pancreatic insufficiency, bile insufficiency and digestive enzyme deficiencies. Pancreatic insufficiency means the pancreas cannot produce enough of the digestive enzymes lipase needed for the digestion of fat, amylase needed for the digestion of carbohydrates, and protease needed for the digestion of protein. Bile insufficiency results in impaired secretion of bile by the liver, obstruction of the bile ducts that carry bile and abnormal circulation of bile salts that impairs the digestion of fats. Deficiency of lactase, sucrase, and maltase enzymes in the villi, microscopic absorbing structures of the small intestinal lining, results in failure to finish the digestion of sugars. Deficiency of protease enzymes in the microscopic villi results in failure to finish the digestion of protein required for absorption into the bloodstream.
Undigested carbohyrates arriving in the colon cause excessive fermentation and draw water from the bloodstream into the colon. These conditions produce symptoms such as abdominal pain, watery diarrhea, IBS-like symptoms, bloating, and gas. Pale foul-smelling stool that float or stick to the toilet bowl results from fat malabsorption. Protein maldigestion encourages putrefaction.
2. Altered gut motility, or movement of food through the digestive tract, and low stomach acidity commonly found in celiac disease promote excessive fermentation in the large bowel and overgrowth of yeast and bacteria in the small bowel, both serious conditions.
3. The health and integrity of intestinal cells depends on adequate availability of thiamin, riboflavin, niacin, zinc and vitamin A. Deficiency of these nutrients sets the stage for inflammation, infection and diarrhea that worsen gut function and induce overpopulation by pathogens, disease-producing microbes. Magnesium and potassium are needed for muscle contraction.
How probiotic flora improve health. Probiotic flora inhibit colonization of pathogens by physically preventing them from adhering to the gut lining. Other important functions are:
- Produce short chain fatty acids (SCFA)s as propionic, acetic, i-butyric,and i-valeric acid. SCFAs are important and necessary energy byproducts formed during fermentation of undigested carbohydrates in the colon by flora. SCFAs nourish the colonocytes, the cells that line the colon. They also help absorb salts and water from stool.
- Produce a form of vitamin K and appreciable amounts of biotin.
- Reduce the presence of putrefactive enzymes.
- Protect against toxic substances, such as heavy metals.
- Contribute to normal bowel movements.
For these reasons, we need to use probiotics and prebiotics every day to improve our overall health and specifically our intestinal health. This is especially important if fatigue, weakness, achiness, depression, foggy thinking and digestive problems continue while maintaining a gluten-free diet.
Good probiotic food sources to replace lost or reduced flora in the colon include fermented products such as yogurt, kefir, sauerkraut, miso, and unpasteurized apple cider vinegar.
Probiotic supplements that are guaranteed to contain billions of live organisms, such as lactobacillus and bifidobacillus, are very helpful to quickly establish or renew flora. In addition, lactobacillus and bifidobacillus make the colon more acidic, which keeps harmful microbes such as Candida albicans, a yeast, from living and multiplying.
Prebiotics include dietary fiber and fructo-oligosaccharides (FOS). FOS are simple sugars called neosugars, partly composed of fructose, that cannot be digested in the small intestine therefore passing into the colon. In the colon, they stimulate the growth of beneficial bacteria including bifidobacteria and lactobacillus, which results in the reduction of harmful bacteria, such as salmonella and clostridia. One study revealed that increasing these neosugars causes an increase in bifidobacteria and a decrease in the activity of ß-glucuronidase, an enzyme which converts procarcinogens to carcinogens in the bowel. Carcinogens are able to induce cancer.
Food sources of FOS include honey, gluten-free beer, onion, burdock root, asparagus, Jerusalem artichoke, banana, maple sugar, and Chinese chives.
Natural foods that improve digestion and movement of food through the digestive tract include raspberry, celery, lemon, horseradish, carrot, grapes, lettuce, onions, garlic, cinnamon and ginger.
In summary, probiotics and prebiotics with support of a daily 100% vitamin/mineral supplement can help us recover faster and more fully on the gluten-free diet and maintain health.
- Tjellström B, Stenhammar L, Högberg L, Fälth- Magnusson, K Magnusson KE, Midtvedt T, Sundqvist T, Norin E. Gut microflora associated characteristics in children with celiac disease. Scand J Gastroenterol. 2001 Feb;36(2):163-8.
- Murray IA, Smith JA, Coupland K, Ansell ID, Long RG. Intestinal disaccharidase deficiency without villous atrophy may represent early celiac disease. Am J Gastroenterol. 2005 Dec; 100(12):2784-8
- Kamilova AT, Akhmedov NN, Nurmatov BA. Intestinal microbiocenosis in children with intestinal enzymopathy. Zh Mikrobiol Epidemiol Immunobiol. 2001 May-Jun; (3):97-9.
- Kathleen Mahan and Sylvia Escott-Stump, ed, Krause’s Food, Nutrition, and Diet Therapy. 10th Edition. Philadelphia,USA: WB Saunders Company, 2000, p. 278.Copyright © Cleo Libonati 2007.