I bought a magazine yesterday on Brain Health. There were articles on all sorts of aspects, including the effects of the microbiome on the brain. In a nutshell, the scientist interviewed declared that one generally gets a sense if there are problems with the biome if a person a) has Irritable Bowel Syndrome or b) Constipation.
What then is one to think if - like me - one's never had either of these?! Are we to suppose that the biome is healthy and that the answer lies elsewhere? Just curious.