Thankful Day #18

Thankful Day #18: I am thankful for my microbiome--the bacteria that live in and on me, making life possible. In my colon alone, there are 100000000000 bacteria per cubic centimeter, and these little friends comprise 90% of my stool mass. They break down indigestibles, they keep pathogenic bacteria in check, they produce and liberate vitamins from food. And they ensure I'm never really alone.