Is it possible to introduce this to the body without buying it specifically? Or put another way, how did people get L. Reuteri without pharmaceutical/supplement companies growing it in labs?
> It appears to be essentially ubiquitous in the animal kingdom, having been found in the gastrointestinal tracts and feces of healthy humans,[7] sheep, chickens,[8] pigs,[9] and rodents.[10] It is the only species to constitute a "major component" of the Lactobacillus species present in the gut of each of the tested host animals,[11] and each host seems to harbor its own specific strain of L. reuteri.[10][12] It is possible that L. reuteri contributes to the health of its host organism in some manner.[13]
The labs got it from nature, not the other way around.
Breast milk is inherently sterile (unless the mother has a severe bacterial infection). It usually gets contaminated with the skin microbiota during feeding.
So no, I wouldn't count on L. reuteri being found in a random sample of breast milk.
That's hotly debated. Even the study you cite cannot rule out skin contamination.
But unequivocally showing the existence of entero-mammary pathway (translocation of maternal gut bacteria from the gut to the mammary glands) would be very exciting news indeed.
Yes, because if you are buying breast milk from a woman who used a breast pump, then the skin contamination is very very little compared to actual breast suckling.
You've put more confidence in your statement than the scientific consensus allows.
A brain microbiome is hotly debated, no concrete proof (yet?). I personally also have a hard time believing in a healthy bacterial blood microbiota, but it's also proposed.
I know lactos are in the environment naturally. When I ferment peppers or other vegetables I lightly rinse them to make sure some bacteria is left. Eating raw fruits and vegetables would certainly pass some bacteria to the gut.
They know someone who knows someone who swears their cousin had the best kefir, or a proper “Tibetan mushroom” complex. Supplement companies aren’t the devil.
> It appears to be essentially ubiquitous in the animal kingdom, having been found in the gastrointestinal tracts and feces of healthy humans,[7] sheep, chickens,[8] pigs,[9] and rodents.[10] It is the only species to constitute a "major component" of the Lactobacillus species present in the gut of each of the tested host animals,[11] and each host seems to harbor its own specific strain of L. reuteri.[10][12] It is possible that L. reuteri contributes to the health of its host organism in some manner.[13]
The labs got it from nature, not the other way around.