Why Does Eating Pineapple Make Your Mouth Sore?

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Danielle Andrew 10 Aug 2015, 13:43

Pineapples are thought to have originated in South America and were first discovered by Europeans in 1492 on the island of Guadeloupe. However, pineapples didn't make it to England until the late 1600's, where it quickly became a must-have item for the wealthy. Worth around $8,000 (£5000) each, only the absolute elite could afford this exotic fruit, and according to one source, the fruit wasn't even eaten – just carried around under one's arm at parties and social events as a status symbol.

If you've ever eaten a pineapple, you'll have experienced that weird, scratchy, rough feeling on your tongue after you've munched through a few chunks. So why does that happen?

It turns out that pineapple contains bromelain, a mixture of enzymes that digest proteins. Despite bromelain being an approved anti-inflammatory treatment and having other health benefits, when it comes into contact with the sensitive skin in and around one's mouth, it's actually breaking down proteins, causing the tissue to become sore and inflamed.

So your favorite fruit is essentially eating your mouth. Yes, we're being dramatic. But you get the point.

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