Evidence supporting the use of: Bifidobacterium bifidum
For the health condition: Lactose Intolerance

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Bifidobacterium bifidum is one of several probiotic bacteria that have been investigated for their potential role in supporting lactose digestion and alleviating symptoms of lactose intolerance. The scientific basis for its use centers around the ability of certain probiotic strains to produce β-galactosidase (lactase), the enzyme required to break down lactose in the digestive tract. Some studies have shown that administering specific probiotics, including strains of Bifidobacterium, can improve lactose digestion and reduce symptoms such as bloating, gas, and diarrhea in lactose-intolerant individuals. However, most of the robust clinical evidence focuses on other species, such as Bifidobacterium longum and Lactobacillus acidophilus, rather than B. bifidum specifically.

A few small clinical trials and laboratory studies suggest that B. bifidum may contribute to lactose metabolism by increasing local lactase activity in the colon, thereby facilitating lactose breakdown after it escapes digestion in the small intestine. Despite these findings, the overall volume and quality of evidence supporting B. bifidum for lactose intolerance is limited, and results are not always consistent across studies. Systematic reviews and meta-analyses of probiotics for lactose intolerance typically reference mixed probiotic formulations or emphasize other strains more than B. bifidum alone.

In summary, there is some scientific rationale and preliminary evidence for the use of B. bifidum in supporting lactose intolerance, but the evidence is moderate at best, and more high-quality, strain-specific research is needed to draw firm conclusions.

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