About xylitol: 1 cup of xylitol, a sugar alcohol, has 228g carbs, but as humans we don't have the enzymes to process any of the nutrients from xylitol, so it passes through our system. Studies show that blood sugars and ketone levels are not affected by this in humans, but it can cause digestive upset if you are sensitive to sugar alcohols. If you aren't sure how you will react to xylitol, use in moderation. I recommend trying one piece 2-3 times a day, preferably after eating. I have a ...