Synopsis

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

Bifidobacterium lactis is a probiotic bacterium commonly included in dietary supplements and fermented foods. Its use for gas and bloating is primarily supported by scientific evidence, although the strength of that evidence is moderate. Multiple clinical studies and systematic reviews have evaluated the benefits of B. lactis for symptoms of gastrointestinal discomfort, including gas and bloating, particularly in populations with irritable bowel syndrome (IBS) or functional gastrointestinal disorders.

Research suggests that B. lactis may improve gut barrier function, modulate immune responses, and help balance the intestinal microbiota. These mechanisms can contribute to reduced gas production and bloating. For example, randomized controlled trials have found that supplementation with B. lactis (alone or in combination with other probiotics) can significantly decrease bloating and abdominal distension compared to placebo. Notably, a 2022 meta-analysis of probiotics for IBS found that strains such as B. lactis were associated with modest improvements in bloating and flatulence.

However, responses can be strain-specific, and not all studies have demonstrated consistent benefits. Furthermore, individual differences in gut microbiota composition, diet, and underlying health conditions can influence outcomes. Overall, while there is scientific support for the use of B. lactis in managing gas and bloating, more large-scale and strain-specific research is needed to establish optimal dosing and identify which populations are most likely to benefit.

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