Question: does xylitol affect blood sugar?
Answer: However, xylitol contains zero fructose and has negligible effects on blood sugar and insulin ( 2 , 5 ). Therefore, none of the harmful effects of sugar apply to xylitol. Xylitol's glycemic index (GI) — a measure of how quickly a food raises blood sugar — is only 7, whereas regular sugar's is 60–70 (6).