[Bobylonian]

Well, if I remember, then there was an article about that some bacteria that was present in brains was also present in gut.

The very quick stupid idea was that bacteria from guts was invading brains, but there might be other explanations to that - bacterias are also living outside gut and if some of them somehow are finding a way into the brains, that does not mean that they came directly from guts. Might be - might be not and brains might have other canals that allows bacteria to enter and once they are in brains, they might be able to get control over things and condition brains in favouring specific gut bacteria, by requesting - craving specific food. So, I don't see that this research has nullified those ideas about bacterias affecting brains and helping their species of bacterias without knowing about them. But what this article is proposing is not illogical - not getting into demands of zombified controlled brains hold hostage of bacterias, or actually - developing healthy dietary habbits, by favouring diversity of gut bacterias in first place.