read the "simple starting diet" thread in the vault.
But its pretty simple.
Do eat- animals including eggs and milk, vegetables, fruit, whole grain carbohydrates eg oats, rice.
Don't eat- anything else.
Obviously its very difficult and not much fun to stick to that entirly, so you can eat stuff thats not on the first list, just keep it to an absolute minimum. Never eat stuff thats not on the first list, if you have food off the list available to you.
Cure.