Interesting you should ask that.
My father was forced due to a congenital blood pressure/high cholesterol condition to change his diet radically about eight years or so ago. It affected all of us, in the sense that we started paying close attention to fat content, nutrition, and all of those things. I don't pretend I eat a perfect diet, but my behaviour and interaction did improve. As a small child various E numbers were known to set me off, but I do think the change in diet back then helped me. I have major allergic issues like rhinitis (permanent hay fever) and eczema too - and these have also improved since my dad's diet changed although they have not gone away.
I have tried cutting gluten and I have tried cutting milk based products. It's actually physically impossible to do, though, where I live. Unfortunately rural england hasn't heard of GFCF dietary requirements, so unless I'm going to spend my life gnawing on dried nuts and nothing else, I have to concede defeat. (Get *very* angry at all the "vegetarian friendly" foods, though, considering that that is a CHOICE of diet and has nothing to do with medical diagnosis. Nothing against veggies at all - I just think it's pants that companies go to so much trouble to cater for veggies but couldn't give a damn about people who need certain dietary requirements.).
I also find caffeine and a lot of sugar are bad for me. Caffeine makes me seriously hyperactive - I do everything at speed anyhow (speak, type, work, etc) so it makes me a touch manic. And sugar just makes me nauseous - in much smaller doses than the average person.
In terms of my AS, I'm less fussed about making too many more 'changes' to how well adjusted I am. If I change myself any further, I'll lose me completely and I'm of the opinion it;s time people took me as I am or not at all. But in terms of my health - constant digestive trouble and tiredness and nausea and all of those things - I could really live without. I have a compulsive fear of vomiting as it is anyway - so that probably restricts me more than anything else Aspie.
And I've not yet discovered the magic diet that resolves that problem :S
My diet sucks LOL
Apple