This is sand under a microscope
So much is being discovered about the microbiome that it’s hard to keep track. Personally, I’m not sure whether to call these new understandings common sense, or counterintuitive.
It turns out that despite our being exposed to a relentless onslaught of other people’s microbiomes, and the microbial maelstrom that is our daily environment, our own personal microbiome remains very stable.
Some places on our bodies, like moist places of the armpits, feet or groin areas, showed high microbial diversity and were the least stable over time. Although, scientists suggest this may be a result of personal hygiene practices.
May 2016, phys.org
February 2, 2016