Hi Sif – Welcome to the BSD forum, hope you will find it useful, we all try to be welcoming, inclusive and friendly, offering sound advice to the best of our ability.
I’m guessing from the foods listed, you are doing the BSD for weight loss rather than because of blood sugar issues. However sorry, but to be completely honest you need to ignore the whole GI thing and just look at the carb content and on the BSD ALL of those foods mentioned are a complete No, No, with the possible exception of VERY small quantities of Alpen.
On the BSD Fast 800 you need to keep carb intake low – most of us aim for a daily 50g carbs or lower – as well as controlling the calories. So with a Snicker Bar at 245 calories and 26g carbs, you can see that this would make a huge dent in a normal BSD daily allowance, plus it is chock full of those best avoided refined carbs. A 30g serving of Frosties is much lower in cals at 112, but still a whopping 26g in carbs with most of them from refined sugar – Alpen fairs a little better at 112.5 cals and 17.1g carbs in a 30g portion, but this is still high if you are trying to keep the carbs low.
Hope this helps a little. Shout out if you need further assistance and I’m sure someone will respond or use the search box in the top right of the page to look for a particular topic. Best of luck getting to grips with the BSD way of thinking, it can take a bit of getting used to!