Attempts over many years to implant various dairy strains of Lactobacillus into the human
intestine have proved unsuccessful. Researchers concluded that the Lactobacillus strains
traditionally used in the dairy industry, which included L casei, L bulgaricus, and L
acidophilus, did not possess the biologic characteristics necessary to enable them to implant
consistently in the human intestine and would be unlikely to have a beneficial effect on
human health. Based on this analysis, Gorbach and Goldin started by listing the critical …