Hello -
Sugar isn't something you want to eat regardless of what's going on in your body - it's not food, don't eat it!
As for what you can and can not eat, a good place to start would be to become familiar with my 5 universal eating-for-health guidelines outlined briefly in an article posted on my website: http://foodfitnessbyphone.com/articles/not-food.htm
If this article resonates with you, they you may want to get my book, "If It's Not Food, Don't Eat It!", which will help you further in devising an indivualized healthy eating lifestyle.
My guess would be too, that you could greatly benefit from some cleansing (without fasting) and liver flushes. Check with Andreas Moritz on his forum "Ask Andreas" to be sure.