Adding my thanks to this. I have IBS and have done a ton of self-experimentation over the years to fix my symptoms (with reasonable success). I totally get what

Adding my thanks to this. I have IBS and have done a ton of self-experimentation over the years to fix my symptoms (with reasonable success). I totally get what you mean about free will and being unable to think straight when your digestive system is not managed. This is an interesting pathway that I had not discovered yet; from my initial reading it looks like the mycobiome is somewhat at the cutting edge [1]. [1] https://www.mdpi.com/2076-2607/6/1/22/htm https://www.mdpi.com/2076-2607/6/1/22/htm