I did an interview with Mother Jones magazine yesterday about relatively safe beef cuts.

I got to use my line, Don’t eat poop, and if you do, make sure it’s cooked.

Robynne Chutkan, a gastroenterologist at Georgetown Hospital and the author of Gutbliss and the forthcoming The Microbiome Solution: a pair of books about the gastrointestinal tract, the microbes that live in it, and the stool that comes out of it says:

• poop is mostly bacteria — not old food;

• poop is brown because of dead red blood cells and bile;

• men and women poop differently;

• the ideal poop is a “continuous log” — and sinks to the bottom of the toilet;

• gut bacteria and plant fiber are essential for good poop;

• you can see corn in your poop because of cellulose;

• people living in different parts of the world have different poop;

• baby poop is really, really weird;

• poop transplants can be an effective medical treatment.