Dear Doctors: I was at a wedding where, in his toast, the best man said that as well as a home, the couple would be sharing their gut bacteria. They’re all biologists, so it seemed like an inside joke.
When I asked him, he said no, it’s actually true. Really? Do couples start to share gut bacteria?
Dear Reader: Not that long ago, much of what we know about the human gut microbiome would have sounded…