My psoriasis was really really bad and my DS who is allergic to almost every food know to man sent me a book by Dr John Mansfield a gentleman who specialised in arthritis.
I did his diet and it is a really low sugar one. His mission is to achieve a really healthy gut. Sugar feeds bad bacteria. It was really quite hard and was very relieved when I got to the second phase and I could have gin!
Long story short, it worked and I am not nearly so flaky. I am not still on the diet but have adopted a lot of the practices on the diet. I have a very varied diet and look upon orange juice, for example, as the work of the ?. If you want an orange eat an orange. You will get the sugar of one orange not the sugar of about 5 without the fibre.
Personally I don’t think that you can live without the white stuff, it’s in most things (not gin though) but you can make choices.
Where did you want to move to when you were growing up?

