On: If being too clean makes us sick, why isn’t getting dirty the solution?

[maxerickson]

I've never heard it stated in terms of mass, I've always heard it in terms of a human body having many more bacterial than human cells. But that is being revisited (probably the research you mention):

http://www.nature.com/news/scientists-bust-myth-that-our-bod...

Turns out it is probably ~1:1.

[grhino → maxerickson]

And prokaryotic cells are much, much smaller than eurkaryotic cells. I think the mass of a eukaryotic cell is over 1000x the mass of a prokaryotic cell.