THanks for sharing your experience.

Diet ABSOLUTELY impacts on skin health, as it does on every other aspect of health. THere was a small study done on chocolate and acne decades ago on about a dozen kids ... it was very poorly planned and executed and has been used for years by dermatologists to claim diet has no impact on acne and justify the use of pharmacotherapy. There are other studies showing links (also small).

I think you need to try stopping acne and other sugar (soft drink etc) for a month and see what happens. Apart from improving your skin you are likely to be alot healthier in other ways to.