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Content: The systematic review compiled all published human clinical trials exclusively measuring the effects of the probiotic strains Bifidobacterium lactis and Lactobacillus casei. FYI, L.casei is the probiotic strain used in Dannon's DanActive yogurt drink. In the UK and EU the product is marketed as 'Actimel'. The aim of the review was to determine whether the scientific evidence supported the health claims made by Dannon in their marketing. The health claims being: "Improving defenses (product containing L. casei) and improved intestinal transit (product containing B. lactis)." The review panel assessed the strength of evidence with a grading classification of grade 1 for the strongest and Grade 5 for the weakest. What they found was interesting...
The research team identified 440 studies involving the two probiotics but only 16 met the inclusion criteria of systematic review. At the time of the review, Dannon's website cited 47 of those studies but only 12 met the reviews inclusion criteria. Furthermore, only 7 out of the 12 studies "demonstrated some positive effect following consumption of milk products enriched with probiotic strains''.