McDonald’s diet for ten days and after just four days experienced a significant drop in the number of beneficial microbes.
Similar results have been demonstrated in a number of larger human and animal studies.
Your gut microbiome is a vast community of trillions of bacteria that has a major influence
on your metabolism, immune system and mood. These bacteria and fungi
inhabit every nook and cranny of your gastrointestinal tract, with most
of this 1kg to 2kg “microbe organ” sited in your colon (the main bit of
your large intestine).