What do you make of this?

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This topic contains 3 replies, has 3 voices, and was last updated by  Floggi 5 years, 8 months ago.

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    This is really old news.

    Adding good bacteria does not change the gut flora. Adding bad bacteria doesn’t change the gut flora either. This has been known for a long time. Only sellers of probiotics claim otherwise (commercial considerations), as do some alternative websites (they adhere to their belief system more than to reality).

    There are only two cases where intake of bacteria does have a, possibly profound, effect on the gut flora.

    The first is during birth. The newborn baby’s gut flora is kind of “initialized” by the mother’s gut flora. This happens because birth is quite a “messy” process. Of course, this only happens during a natural birth process under natural (that is, not sterile) circumstances.

    The second is after having killed lots of gut bacteria. This usually happens after having taken antibiotics. Directly after stopping the use of antibiotics, bacteria may be added to the gut flora.

    In all other cases, the gut flora is extremely resistant to modification in any way.


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    Floggi;49167 wrote: Adding good bacteria does not change the gut flora …

    Only sellers of probiotics claim otherwise

    Actually the College of Science and Mathematics at California Polytechnic State University also claims otherwise.

    Research study title:

    Biological Sciences Department
    College of Science and Mathematics
    California Polytechnic State University
    (Page VII)

    Quote: “The ecological balance of the intestine can be favorably altered upon the ingestion of probiotics. Probiotics are micro-organisms that exert health benefits beyond innate general nutrition. The qualifying characteristics defining a probiotic includes: resistance to acid and bile, ability to attach to human intestinal mucosal cells, capability of colonization of the human intestinal tract, ability to produce antimicrobial substances, ability to demonstrate probiotic activity and to survive modern manufacturing processes, must be of human origin (Human Micro Flora by Genestra is part of the protocol). Their role in the prevention and treatment of different gastrointestinal disorders continues to be supported by ongoing research.”



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    The page VII to which you refer only mentions the text you quoted. There is no mention of the circumstances under which the ecological balance would be altered. As far as we can tell from this little excerpt, they may agree with my previous posting in that the beneficial effects only occur if the probiotics are taken directly after a prolonged antibiotics treatment.

    However, if you also read the rest of this study, you’ll find that the study didn’t look at human intestines. Instead, they monitored the growth rate of candida albicans in a petri dish, being fed with Sabouraud destrose agar and broth.

    Contrary to what one would think, no probiotics were added. Instead, a probiotic cell culture was grown under artificial circumstances. The cell culture was then centrifuged at 13 thousand (!) rpm to remove (!) all the cells. The remaining liquid was added to the C. Albicans culture to see what would happen.

    In other words, this was a laboratory experiment. No human cells were involved. Not even probiotic cells were involved!

    The laboratory environment was sterile and utterly artificial. The results say nothing about what happens in the complex environment of the human intestine.

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