Probiotics

These strains of beneficial bacteria reestablish healthy intestinal flora in the human body. By taking up room and resources in the digestive tract, probiotics protect the digestive tract from unhealthy microbes. Common strains include Bifidobacteria infantis and Lactobacillus acidophilus. Look for cultured foods, like yogurt, cheese, tofu, and cottage cheese, or incorporate probiotics into your diet with supplements. See also Prebiotics and Synbiotics.