Evidence supporting the use of: Bacteria
For the health condition: Allergies (food)

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Synopsis

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

Bacteria, specifically certain probiotic strains, have been studied for their potential to prevent or treat food allergies. Scientific interest in this area comes from the understanding that gut microbiota play a crucial role in the development and regulation of the immune system. Several studies, both in animals and humans, suggest that early life modulation of gut bacteria through probiotics may help reduce the risk of developing food allergies, particularly in children at high risk.

Randomized controlled trials have investigated the use of probiotics such as Lactobacillus rhamnosus GG and Bifidobacterium species in the prevention of atopic dermatitis and food sensitization. Some studies have shown modest reductions in the development of food allergies or eczema when probiotics are administered to pregnant mothers and infants. However, results are mixed and not all studies have found significant benefits. A 2015 meta-analysis published in the journal Allergy concluded that probiotics may reduce the risk of eczema but found insufficient evidence to recommend their use for the prevention of food allergy specifically.

In terms of treatment, some evidence indicates that probiotics might enhance the effectiveness or safety of oral immunotherapy for food allergies, but this is still an emerging area of research. Overall, while there is scientific rationale and some human evidence, the strength of evidence is moderate and routine use of probiotics for food allergy prevention or treatment is not yet universally recommended by clinical guidelines.

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