Is there potential here for creating eating disorders?
Unfortunately the feeling of experiencing success in controlling acne through one’s diet might be overwhelming enough to create a fear for eating necessary and beneficial foods. As I already said sugar does not exist in every food and drink, and very healthful diets can exist without sugar-containing foods. Alternative tastes need to be developed. Perhaps consult a professional dietician. I know from experience that is quite difficult getting help from non-sufferers since many people consider acne more of a problem of careless hygiene rather than a real disease. Find someone in the same situation and exchange ideas on foods, fears, and successes.