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Ongoing research shows that lactic acid bacteria fight bad breath (halitosis). Lactic acid bacteria are bacteria that ferment milk and produce lactic acid as they break down carbohydrates. They include a number of different genera and species, including lactobacillus and bifidobacterium, bacteria commonly used to make yogurt. Other lactic acid bacteria are used in the production of other foods and, most recently in probiotic natural health supplements.
Lactic acid bacteria provide an intriguing natural remedy for halitosis: studies show that, both in laboratory conditions and in the mouths of volunteers, these bacteria inhibit the growth of oral anaerobic bacteria, the culprits in most cases of uncomplicated halitosis. Lactic acid bacteria fight bad breath by actually replacing the anaerobes, by interacting with them to produce hydrogen peroxide, and by creating an environment that is too acidic for the anaerobes.
The discovery that lactic acid bacteria fight bad breath has inspired both recommendations that people regularly eat unsweetened yogurt, and the development of foods to fight oral malodor that contain high concentrations of organisms such as Weissella, a bacterium that may be particularly good at fighting anaerobes without promoting tooth decay. As a natural remedy for halitosis, what could be easier than just including one of these foods in your diet daily?
A study where researchers had volunteers test unsweetened yogourt as a natural remedy for halitosis by consuming it daily found other benefits: a decrease in the amount of plaque buildup on the teeth and a lower incidence of gum disease. To the extent that both dental plaque and gum disease are frequently associated with oral malodor, these findings suggest that lactic acid fights bad breath through several processes working together.
It will likely take additional research to determine how we might best use lactobacillus and similar organisms as a natural remedy for halitosis; however, in the meanwhile those who suffer from this common condition might consider adding unsweetened yogurt to their daily routine.
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Source by R. Drysdale