Every time you eat conventionally raised meat, you are exposing your gut microbiome to the same broad spectrum antibiotics that are making farm animals grow faster and get fatter — and 60% of American chicken tested positive for them even though it is completely illegal. What most people don’t realise is that avoiding antibiotics yourself is only half the battle. The gut microbiome is home to up to 10,000 different species of bacteria, and a single course of antibiotics can reduce that to just one or two surviving species. Stanford researchers have found that some of that diversity may never…

