Evidence supporting the use of: Lactobacillus rhamnosus
For the health condition: Lactose Intolerance

Links: Go back one page, Tool main page, Ingredients list, Health conditions list, Body systems list

Synopsis

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

Lactobacillus rhamnosus has some scientific support for its use in managing lactose intolerance, though the evidence is moderate. The rationale is rooted in the ability of some probiotic bacteria, including L. rhamnosus, to produce the enzyme β-galactosidase (lactase), which can help break down lactose in the gut. Several clinical studies have investigated the effects of probiotics on lactose digestion. Some have shown modest improvements in symptoms such as bloating, flatulence, and diarrhea following the consumption of dairy products in individuals with lactose intolerance.

For example, research published in Alimentary Pharmacology & Therapeutics and other peer-reviewed journals has demonstrated that supplementation with certain strains of Lactobacillus (including L. rhamnosus) can enhance lactose digestion and reduce intolerance symptoms, particularly when the probiotics are co-administered with dairy. The mechanism is thought to involve both direct enzymatic activity and modulation of the gut microbiota, promoting the growth of other lactose-fermenting bacteria.

However, effects can vary depending on the strain, dose, and individual factors. Not all studies find significant benefits, and some meta-analyses suggest only a mild improvement in symptoms. Therefore, while L. rhamnosus is not a cure for lactose intolerance, there is a reasonable scientific basis for its supportive use, especially as part of a multi-strain probiotic regimen or in fermented dairy foods.

More about lactobacillus rhamnosus
More about Lactose Intolerance