I'm vegan currently while I try to remove unwanted foods (gluten and legumes), as those I have found effect my body negatively (and could have been doing so for over 11 years, and prior to the symptoms). Anyways.. what I'm getting at is that you may not know something is bad for you until further down the line.
How did you find out that these foods were affecting your body negatively? I'm hearing from the grain-haters that a lot of people "don't know they're sick" or that people who have issues with grain have "adapted" to their illness. The question then becomes: If you don't know when you're sick, how can you know when you are truly well?
I wish there was some systematic way of knowing what you're body is ok with. I suppose allergy tests are one way, since they can just poke you in certain areas with an allergen and see if that area is showing symptoms. Not really much guesswork there.
Is it possible to just go to a doctor and ask for bloodwork to see if you're deficient in anything? I'm thinking that might be the way to start. Not too long ago my sister found out that she's allergic to a bunch of random stuff and now I'm wondering I should get tested.
A lot of my upbringing taught me wrong ways of eating as a vegetarian, so even the right things can turn out wrong regardless of the source you get them from.
What were some of the "wrong ways" that you learned? Maybe I'm making some mistakes myself.