On Dcomedieta I have often written about the importance of intestinal bacterial flora both in weight loss and in maintaining a good body weight.

Today we know that the intestinal bacterial flora plays a key role in the immune system and that obese and overweight people have an altered intestinal bacterial flora, with the massive presence of bad bacteria compared to the concentration of the good ones.

So much so that many studies have pointed out that fecal transplantation, a technique successfully used to combat some severe types of colitis, can also be used successfully in the case of diabetes and obesity. Without going that far, there are 5 things that cause altered bacterial gut flora, which we should therefore avoid wherever possible.
I believe that all 5 cases are possible, because they are often wrong habits.