Why does toothpaste make whatever you eat after brushing taste bad?

Question

What’s the property of toothpaste that makes some foods (orange juice is the classic example, I guess) taste SO bad if you eat right after brushing?

In: 60

Answer 1

There are two reasons – mint dulls your sense of sweetness (that’s why you can eat mints that are basically made of a sugar cube and mint oil) and also the chemicals used to make the toothpaste frothy heighten your bitterness sense, just as a side effect.

If you take all the sweetness put and double the bitterness, orange juice, or pretty much anything will taste odd and often unpleasant! Orange juice is especially bad as it often contains a lot of the pith and skin from the orange which has a bitter taste, normally masked by the sweetness of the juice.