Say the word "yeast" in relation to health and many people will recoil. The word is often and unfortunately associated with negative biological reactions. But just as there are good bacteria and bad bacteria, so too are there good yeasts and bad yeasts. The new Lynside® Pro GI+ in our Inner Bowel Support Formula is a shining example of a good yeast—a clinically validated, scientifically developed strain of Saccharomyces cerevisiae shown to improve gut microflora and support intestinal comfort. This unique, patent-pending strain of Saccharomyces cerevisiae is only the second probiotic yeast known to science, and the first to specifically target bowel comfort.
Inside the human intestinal tract there exists a complex ecosystem, where roughly 100 trillion microorganisms from up to a thousand different species cohabitate. In fact, these microorganisms are so abundant that they outnumber the total number of human cells in the body by a ten-to-one margin. With such a large and diverse population, these intestinal inhabitants include good, bad and neutral strains, in regard to their effects on human health. The bad ones, known as pathogens, can cause illness when present in sufficient numbers. The good ones perform a wide range of beneficial functions, from energy production via fermentation of undigested carbohydrates to metabolism of bile acids and sterols and even the synthesis of some B-complex vitamins and vitamin K. For optimal health, it's essential to maintain a proper balance of beneficial microorganisms in the intestinal tract. That's where probiotics come in.
Probiotics, a term that literally means "in favor of life," comprise a diverse group of beneficial intestinal microorganisms, most of which are bacteria, but also including some types of fungi, specifically yeasts. The potential benefits of probiotics were first hypothesized early in the 20th century by Nobel laureate Elie Metchnikoff, a Russian scientist employed as a professor at the Pasteur Institute in Paris, when he observed that certain rural populations from Bulgaria and the Russian steppes, who lived largely on milk products fermented by lactic acid bacteria, were remarkably long-lived. Based on this observation, Metchnikoff proposed that the consumption of these fermented products favorably altered gut microbiota content in a way that promoted good health, and the science of probiotics was born.
Scientists have identified hundreds of beneficial probiotic bacteria, but only two strains of probiotic yeast. These yeasts hold one powerful advantage over probiotic bacteria—they've been demonstrated to be more resistant to stomach acid and much more vigorous in colonizing the lower GI tract. One of these yeasts, a proprietary strain isolated by French researchers and registered with the French National Collection of Microorganism Cultures as Saccharomyces cerevisiae CNCM I-3956, is now available in America as Lynside Pro GI+, the active ingredient in Swanson Probiotics Inner Bowel Support Formula. This patent-pending strain of probiotic yeast has been shown in clinical trials to provide specific benefits for the lower GI tract. Our vegetarian capsules make it even more effective with acid-resistant, designed-release DRcaps® technology, which protects the capsule through the stomach for release in the lower GI. With 4 billion viable organisms per capsule, it's a reliable alternative for optimal bowel health and comfort.