Some toothpastes may contain artificial sweeteners. Whilst these don't have any calories as such, they can trigger an insulin reaction, which is counterproductive to one of the main benefits of intermittent fasting. So we advise, keep brushing your teeth but be careful of swallowing any of the toothpaste itself!

Does toothpaste affect glucose levels?

Skipping Breakfast Can Lead to Higher Blood Sugar All Day

The only difference in food intake over the two days was that the participants consumed breakfast one morning and not the next. The study showed that on the day they skipped breakfast, their blood sugar levels were higher for the whole day.

Can toothpaste break your fast?

Brushing your teeth does not break your fast, according to scholars. Mr Hassan says that sometimes people who are fasting erroneously believe that the slight minty taste from toothpaste is enough to break the fast.