Dentist here! Don’t eat your toothpaste and you should be good. Some negligible amount of sweetener could theoretically be absorbed sublingually, but usually you’re not holding piles of toothpaste under there. And if you’re eating enough toothpaste that you’re digesting the sweetener, you’re definitely eating too much fluoride in your toothpaste. Which brings us back to the original headline: don’t eat your toothpaste!
perhaps, but the cost of not brushing your teeth is too great. Bacteria build up faster when you don’t brush them away. You can look for sugar free sweeteners but the amount used is honestly negligible.
I heard Dr. Fung address this in an interview one time and he said that it could raise insulin, just like many things can during the day, but it doesn’t have nearly the same effect as eating does and it doesn’t break a fast.