Gaseous blends of sulfur in the mouth can cause bad breath or halitosis. Some types of probiotic bacteria in fermented foods like yogurt, pickles, sourdough bread, kimchi and miso soup can alleviate the third most common problem referred to dentists, according to the British Medical Journal (BMJ) and NBC News.

Previous studies revealed that certain bacteria taken as supplements, including Lactobacillus salivarius and Lactobacillus reuteri reduce odor. As it’s name suggests, Lactobacillus salivarius is prevalent in our saliva which metabolize carbs into lactic acetic acids.

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NBC News says that researchers pooled the data from seven studies and compounds that are linked to smelly breath. Bad breath declined significantly in participants who consumed probiotics, compared to those who were given placebos. NBC News report added it is possible that probiotic supplements may also help, but additional clinical trials are needed.

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