Why Chopping Onions Makes You Cry Health24 Why do onions make you cry?. When an onion is sliced open, it releases a pesky molecule known as a lachrymatory factor. when it hits your eyes, it’s all over. your lachrymal glands start churning out tears. scientists long.
Why Do Onions Make You Cry And How To Prevent It Scientific Explain Why do onions make you cry?. Onions are one of humanity’s oldest friends—providing sustenance (and tears) for at least 5,000 years. it wasn't until the last couple decades that researchers began to figure out just why. Why do onions make you cry?. Using a sharp knife while cutting onions will drastically trim down the amount of cells you’ll bruise. as a result, fewer enzymes will be released, thus, fewer tears. freeze for 30 minutes. pop.
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