whatever the prevalence of these extra-intestinal manifestations, the one in the gut, IBD, seems to be the worst.
I wondered how similar different strains of L. casei were. I found one article comparing some properties (mostly their affinity for binding to lectin. As I read lectins are proteins on the surface of T-cels that bind to sugars on the surface of bacteria cells.). The link below is for a figure from the article comparing 4 stains, and YIY 9029 is Yakult (Shirota).
www.ncbi.nlm.nih.gov/pmc/articles/PMC3127709/figure/F3/it is very distinct form the others. if the benificial effect is related to ONLY the CSA spike, then only the strain in Yakult would do. if the benefit is related to AT LEAST the CSA spike, then the strains 006 and 0180 would also do. I don't know if one of these strains is the L. casei in DanActive.
Interesting enough, the Shirota strain was genetically engineered form strain 0180 by knocking out some genes.
the article the figure came from said...
YIT 9018, the parental strain of YIT 9029 which was produced by removing bacteriophage [phi]FSW from the YIT 9018 genome
While I am not fond of bullies like Monsanto, I am not opposed to the concept of GM foods. Some people are, and use terms like FrankenFood, and seek to limit/end all research on GM techniques. Yet these same people are often very bullish on "natural" remedies like probiotics. There might be some cognitive dissonance if they stopped to consider that this probiotic was a FrankenBiotic. (But in all fairness some would say that knocking out genes is is th eOK GM, and the bad GM is inserting genes.)