My dad asked me to eat McDonald's for 10 days. This is what happened
The idea was hatched on a family holiday in Brazil, two Christmases ago. My father was researching microbes in the gut, which make up as much as three pounds of our body weight and play a big role in our health. He was wondering about testing all the family. It was perfect timing. I was thinking …
Ruth Ann Agir flipped this story into Sciences•3241d