Mayo Clinic Minute: Why do onions make you cry?

Cut up an onion, and you?ll likely cry a few tears. It?s the result of a 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 [...]
Source: News from Mayo Clinic - Category: Databases & Libraries Source Type: news