Dr. Earl Mindell's Probiotic Bible

with the same probiotic bacteria. This effect of probiotics likely has to do with increased binding of both good and bad bugs to the intestinal lining, which activates antibody production there

Animal and test tube studies have shown that probiotics enhance the body’s ability to produce IgA and IgG antibodies. Lactobacillus was found to improve the body’s production of IgM in response to a rotavirus vaccine, and another study found that antibody response to a typhoid vaccination was improved with the same probiotic bacteria

Probiotics defend against pathogenic bacteria in several ways. They compete for nutrients, regulate the immune system, and increase the activity of genes in the gut that are associated with improved resistance against unfriendly bugs

I’m also talking about overactive immunity, the kind that attacks its host in the form of allergies, asthma, and autoimmune disease