How sweeteners compare on the glycemic index
Glycemic index ranks how quickly a food raises blood glucose against a reference. Table sugar (sucrose) sits in the moderate range near 65. Sugar alcohols like xylitol score much lower (around 7) because they are absorbed slowly and incompletely. Most non-nutritive sweeteners, such as sucralose, aspartame, and steviol glycosides, contribute essentially no digestible carbohydrate and produce little to no direct glycemic response.
This is why these substitutes are common in products marketed to people watching blood sugar: gram for gram they raise glucose far less than sucrose, and several add negligible calories.
What a low glycemic score does not settle
A minimal glucose response is only one consideration. Sugar alcohols can cause gas, bloating, or a laxative effect in larger amounts, and individual tolerance varies. Research on whether non-nutritive sweeteners affect appetite, the gut microbiome, or long-term metabolic health remains mixed and is still developing, so a low glycemic number should not be read as proof of overall benefit.
This is general educational information, not dietary or medical advice. People managing diabetes or other conditions should consult a qualified professional rather than relying on glycemic figures alone.