Cultured dairy contains probiotics and short-chain fatty acids that may help heal the gut. Milk products and dairy foods fermented with lactic acid bacteria such as lactobacillus, lactococcus, and leuconostoc include kefir, yogurt, amasai, buttermilk, and raw cheese. Kefir alone contains approximately 60 strains of beneficial bacteria. Studies suggest it may reduce the growth of harmful bacteria such as salmonella, h. pylori, and E. coli, but more research is needed.

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