Oh I am also intrigued by the microbiome and I was blown away to find out pretty amazing stuff about it. For example you can get depressed or , on the contrary, get better health, if you "exchange"microbiome. This happens especially in couples. Boy if we all knew this before casting the first kiss. HAHAHA. It is very important to be with someone that has a healthy microbiome as they will inevitably infect you if you are very close to them. They should teach this in school