After the festive feasts are over, most of us face unpleasant consequences: a feeling of heaviness, flatulence (bloating), bowel disorders and the appearance of a few extra pounds. The traditional reaction to this condition is to try to abruptly go on a strict diet, organize a "detox" or start blindly counting calories.

The change of seasons is not only a change in the weather outside the window, but also a profound transformation within our bodies. Our gastrointestinal tract and the trillions of microorganisms that inhabit it (the microbiome) are evolutionarily adapted to seasonal changes in diet.