Do probiotics actually support immunity?

The action of probiotics promotes immunity by occupying the intestinal wall and supporting barrier defenses. Some strains, such as Lactobacillus casei induce production of secretory IgA antibodies within a few days after consumption. These antibodies trap pathogens in the membrane mucus before they enter. Food bacterial products of daily consumption, such as yogurt, yield measurable effects in the functional activity of gut-associated lymphoid tissue.

Probiotics physically block pathogens through a process known as competitive exclusion. Beneficial bacteria fill receptor sites in your intestinal lining, leaving no space for pathogenic organisms to occupy. Beneficial bacteria also produce bacteriocins, which are natural antibiotics that directly kill competing bacteria. This two-prong approach takes approximately 72 hours of continuous consumption to create protection.

The immune system is modulated through direct communication with gut immune cells. The probiotics stimulate the pattern recognition receptors on gut dendritic cells. This trains the immune system to differentiate between harmful and innocuous substances. Regular consumption can help reduce inappropriate inflammatory reactions, thereby aiding in the management of allergies and autoimmune diseases.

Effective use requires specific strains and dosages of probiotics. Choose products that list strain names such as Lactobacillus acidophilus NCFM. Fermented foods contribute to a diversity of colonies: 170 grams of natural yogurt contain 109 CFU, while American ketchup has multiple lactobacilli. Consistency is important: eat probiotic foods daily for lasting results.

Read the full article: 10 Immune System Boosters for Better Health