Your's is the worst post on this thread because its a misuse of science. The study you linked doesn't say or imply that exposure to human feces is healthy.
I can link a number of studies that pinpoint exposure to human feces as a cause of numerous deseases. Just google it.
We will always be exposed to bacterium. Its not even in the discussion about being in a completely germ free environment. There is no such thing.
But it is good to avoid touching feces in a public bathroom, don't you agree?
(Do you have kids and teach them your ideas about how its healthy to touch feces in public bathrooms? I didn't think so)
[quote]immunology phd wrote:
if we didn't have fecal transfer between individuals we would never obtain the bacteria that colonize our gut and assist in proper immune system development & function.
diseased mice (which have a unique gut microbiome depending on the condition) can be placed in cages with healthy mice (having their own distinct micobiome) and through acquisition of "healthy" bacteria via fecal transfer, the diseased mice reset their gut microbiome and can see improvements in health.
point is that the stuff that people go "EEWWW GROSS!!!" to & overreact to in terms of cleanliness/sterilization methods is actually very important for the devo & function of our immune system - our immune system & bacteria/parasites/fungi etc. have been interacting & co-evolving for millions of years, and to suddenly wipe out these interactions with 'over-cleanliness' has harmful & unintended consequences.
for instance, this study from 10 years ago(!) showed that if you wipe out commensal microflora in the murine intestinal track with antibiotics, these mice are much worse of than mice with a gut full of commensals when subjected to a compound that induces a colitis-like disease.
http://www.ncbi.nlm.nih.gov/pubmed/15260992
and this was 10 YEARS AGO, just the tip of the iceberg, so much more research out there now suggesting extreme cleanliness is NOT good for normal devo & function of our bodies. ok end of rant.
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