It may sound odd that bacteria can actually reduce allergy symptoms. But, certain bacteria can reduce inflammation in the body, improve nutrient absorption, and reduce nasal and sinus symptoms linked to allergies. Of course, not just any bacteria will do.
Research by scientists at the Osaka University School of Medicine found that certain probiotics were effective in the treatment of nasal and sinus symptoms linked to allergies. According to their study published in the International Archives of Allergy and Immunology, the specific strains that are effective include: Lactobacilli casei, Lactobacillus paracasei, L. acidophilus, and Bifidobacterium longum.