Thursday Big Question: Why does chopping an onion make you cry?

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Why does chopping an onion make you cry

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Why does chopping an onion make you cry?

Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes’ lachrymal glands so they release tears.

Recent studies from Japan, however, proved

– Lachrymatory-factor synthase is released into the air when we cut an onion…

 

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