Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Lactobacillus gasseri is a probiotic bacterium naturally present in the human microbiota, including the vaginal and gastrointestinal tracts. Scientific studies suggest that L. gasseri may support the female reproductive system, primarily by contributing to vaginal health. Several clinical and in vitro studies have shown that L. gasseri can inhibit the growth of pathogenic bacteria and yeast, such as Gardnerella vaginalis and Candida albicans, through mechanisms like lactic acid production and competitive exclusion. This activity helps maintain or restore the normal vaginal flora, which is crucial for preventing bacterial vaginosis and yeast infections.

For example, a 2015 review published in the journal Microbial Pathogenesis highlights the role of various Lactobacillus species, including L. gasseri, in maintaining vaginal health. Some randomized clinical trials have reported that oral or intravaginal supplementation with L. gasseri can reduce recurrence rates of bacterial vaginosis or vaginitis. However, while promising, the quality and size of clinical trials are still limited, and more robust, large-scale studies are needed to confirm the efficacy and optimal strains or formulations.

In summary, there is scientific evidence—though not yet conclusive—that L. gasseri can be beneficial for supporting aspects of the female reproductive system, especially vaginal health, due to its probiotic properties and role in maintaining a healthy microbial balance.

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