Gut microbes

I love that every few weeks there is news, that microbes in our gut keep us safe from disease X or condition Y.

Let the Pfizers and Schering-Ploughs of the world invent blockbuster drugs. Some entrepreneur somewhere should create a Stool Bank where you can have Stool Safe Deposits where you would drop off Stool samples every birthday as a type of reverse promissory note. It would guarantee that your gut, and hence you, could return to an earlier you by altering its fauna.