Mayo Clinic Minute: Why do onions make you cry?

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Cut up an onion, and you’ll likely cry a few tears. It’s the result of chemical reaction you start with the first slice of your knife – a reaction that researchers continue to explore.

Jen Welper, executive chef with the Mayo Clinic Healthy Living Program, says the sting is part of the onion’s survival mechanism, and a stiff upper lip is the best way to beat it.
More health and medical news on the Mayo Clinic News Network http://newsnetwork.mayoclinic.org/

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