[folli]

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.

[bawolff]

In the context of this conversation, does it matter whether the cause is skin contamination or not?

[TedDoesntTalk]

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.

A seller:

https://cosprings.craigslist.org/hab/d/colorado-springs-brea...

[__alexs]

So you're telling me I should actually be drinking all of this e-girl bath water I bought?

[TedDoesntTalk]

The article says that L. reuteri is present in other places in the body besides the gut.

[candiddevmike]

You can get HIV from breast milk, it's not sterile.

[folli]

HIV is an infectious virus. Also, bacteria in milk is usually a sign of mastitis. I'm explicitly talking about healthy mothers.