Good on you. I did this years ago. But beware the hidden sugars and syrups in virtually ALL processed food and drink! Also beware refined carbohydrates, which can be as bad as sugar (or worse). No rice, pasta, potato, etc. You'll soon be wondering where the fuck you can buy real food. Look at cheeses, unprocessed meat, raw vegetables (you can cook them or at least blanche them). Go easy on the fruit, much of which contains fructose.