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Why toothpaste makes orange juice taste terrible

If you every drank a glass of orange juice in the morning after brushing your teeth, you probably wish you hadn’t. It’s a lesson most of us learn as young kids โ€” orange juice and toothpaste just don’t mix. But why? Blame it on your tastebuds. Your taste buds can detect different flavor types: salty, savory, sour, sweet, and bitter. When you brush your teeth, your ability to detect sweet flavors โ€” be it candy, pastries, OJ, or anything else โ€” stops working so well. It goes like this: Your toothpaste and toothbrush work up a foamy lather that creates bubbles and makes your mouth feel clean. But this foam is made by a chemical called sodium laurel sulphate (SLS), according to the American Chemical Society. On top of disabling your sweet receptors, SLS also break up the phospholipids, or fatty compounds that help reduce bitter tastes, meaning that once…