La fibra è la soluzione
The average American now consumes about 15 grams of fiber per day, roughly half of what the U.S. government recommends. Those 30 or so recommended grams of fiber are likely about a third (or less) of what a more traditional diet might offer. Even the high end of this range is a fraction of what our ancestors probably ate every day. All of that means we’re eating just 10 to 15 percent of what our microbes would have expected. And they seem to be feeling the deficiency?—?as are we.
https://medium.com/s/story/what-your-microbiome-really-needs-is-fiber-not-kombucha-7b4d73aaeaeb