Editing Probiotic (section)

=== Multiple probiotics ===
Preliminary research is evaluating the potential [[physiology|physiological]] effects of multiple probiotic strains, as opposed to a single strain.<ref name="pmid15454313">{{Cite journal |vauthors=Timmerman HM, Koning CJ, Mulder L, Rombouts FM, Beynen AC |date=November 2004 |title=Monostrain, multistrain and multispecies probiotics – A comparison of functionality and efficacy |journal=Int. J. Food Microbiol. |volume=96 |issue=3 |pages=219–233 |doi=10.1016/j.ijfoodmicro.2004.05.012 |pmid=15454313}}</ref><ref name="pmid18785988">{{Cite journal |vauthors=Williams EA, Stimpson J, Wang D, Plummer S, Garaiova I, Barker ME, Corfe BM |date=September 2008 |title=Clinical trial: a multistrain probiotic preparation significantly reduces symptoms of irritable bowel syndrome in a double-blind placebo-controlled study |journal=Aliment. Pharmacol. Ther. |volume=29 |issue=1 |pages=97–103 |doi=10.1111/j.1365-2036.2008.03848.x |pmid=18785988 |doi-access=free |s2cid=12217513}}</ref> As the human gut may contain tens of thousands of microbial species, one theory indicates that this diverse environment may benefit from consuming multiple probiotic strains, an effect that remains scientifically unconfirmed.{{citation needed|date=June 2022}}