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Probiotics in allergic disease: from adjunct supplement to immune-modifying strategy (2026 update)
1Department of Allergy and Clinical Immunology, Landspitali University Hospital of Iceland, Reykjavik, Iceland.
Current Opinion in Allergy and Clinical Immunology
|June 13, 2026
Summary
Probiotics modulate the immune system to prevent and treat allergies. Recent research shows benefits in conditions like atopic dermatitis and asthma, suggesting a move towards disease-modifying therapies.
Area of Science:
- Immunology
- Microbiome Research
- Allergy Therapeutics
Background:
- Global rise in allergic diseases.
- Early-life microbial exposures are key to immune tolerance.
- Need for novel allergy prevention and treatment strategies.
Purpose of the Study:
- Synthesize recent advances (2024-2026) in probiotic-mediated immune modulation.
- Explore translational implications for allergy prevention and therapy.
- Highlight the role of probiotics in immune tolerance.
Main Methods:
- Review of recent scientific literature (2024-2026).
- Focus on studies investigating probiotic mechanisms and clinical applications.
- Analysis of evidence for immune modulation and epigenetic effects.
Main Results:
- Probiotics induce strain-specific regulatory T cells (Foxp3+).
- They suppress Th2 polarization and enhance epithelial barrier function.
- Short-chain fatty acids like butyrate contribute to epigenetic stabilization.
- Clinical trials show benefits in atopic dermatitis, allergic rhinitis, and asthma risk reduction.
- Probiotics enhance oral immunotherapy efficacy.
Conclusions:
- Probiotics are transitioning to disease-modifying immune modulators.
- Integration with allergen immunotherapy and microbiome profiling is promising.
- Potential to redefine strategies for allergic disease prevention and treatment.
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