Somebody new to this forum might assume that one's choice of diet is critical to whether or not they suffer from POIS. A huge percentage of posts on this forum are based upon diet.
But there doesn't seem to be much strong evidence that certain diets provide partial or complete relief from POIS. I'm playing devil's advocate here
I think the same. I've tried all kinds of supplements and nothing helped at all, so it's most likely not a deficiency of any nutrient (it's too specific to be that, anyway). And I eat quite healthily, only organic food, so I see no reason to think that diet plays a role. Judging by my diet, I should be healthier than almost anybody else I know, and here I am, wishing I had the health of any of my friends who live on junk food. Sure, if someone has POIS and they only eat garbage, then moving to a healthier diet will undoubtedly make them feel like there's been an improvement, because they will feel better overall. I don't doubt that. But I doubt that the underlying mechanism of POIS, whatever it is, would change much, if at all.
I think that nowadays, the way the forum is going, someone new to it is going to think one of these two things: that they have to visit a psychiatrist because it's all neurosis and anxiety, or that a FODMAP diet will fix them. I understand people are desperate and we all want relief from this curse, but I doubt anything is going to be achieved going down those routes... Just my personal opinion, of course I respect anything that people want to try, it's their body, their life and their choice after all.