A new study has shown that one ingredient found in three products can eliminate bad breath.
Study author Dr. Longjiang Li from Sichuan University in China explained: “Probiotics can prevent the breakdown of amino acids and proteins by anaerobic bacteria in the mouth, thereby reducing the production of odorous foods.
Probiotics can be found in fermented foods such as yogurt, sourdough bread and miso soup (traditional Japanese soup consisting of a broth in which soft miso paste is mixed. In addition, there are several optional ingredients (various vegetables, tofu) that can be added depending on regional recipes, seasonality and personal preferences).
Dr. Lee analyzed seven clinical trials involving 278 people.
The number of participants in each study was small, from 23 to 68, and their ages ranged from 19 to 70; The follow-up period increased from two to 12 weeks.
The severity of bad breath was determined by the level of volatile sulfur compounds found in the mouth.
Instead, the studies measured breath odor at different distances from the mouth.
Dirty tongue and tartar between teeth were included in the analysis as they are often considered to be the main causes of bad breath.
During the analysis, participants took probiotic supplements such as Lactobacillus salivarius, Lactobacillus reuteri, Streptococcus salivarius, and Weissella cibaria.
It turned out that bad breath was significantly reduced in those who took probiotics compared to the control group.
A similar result was observed for volatile sulfur compound levels, which decreased when participants took probiotics.
The observed effects were relatively short-lived as there was no noticeable difference after four weeks.
Professor Lee added: “This systematic review and meta-analysis shows that probiotics can alleviate bad breath by reducing volatile sulfur levels in the short term. However, they do not significantly affect the underlying causes of bad breath, such as plaque.” “. “The results will be confirmed by future high-quality randomized clinical trials. More research is needed to provide evidence for the effectiveness of probiotics in combating bad breath.”
While bad breath is especially common, it’s also undesirable, so to get rid of it you need to “keep your teeth, tongue and mouth clean,” the NHS said.
Improved oral hygiene includes brushing your teeth and gums at least twice a day for two minutes with fluoride toothpaste.
The analysis is published in BMJ Open.