I recall reading some news recently about studies of the microbiome in immigrants that suggest it can be a relatively quick shift. e.g. see: https://www.theatla

I recall reading some news recently about studies of the microbiome in immigrants that suggest it can be a relatively quick shift. e.g. see: https://www.theatlantic.com/health/archive/2018/11/how-immigration-affects-microbiome/574585/ https://www.theatlantic.com/health/archive/2018/11/how-immig...