Explaining The Mona Lisa's Smile

SCIENCE tries to explain the smile on the Mona Lisa.

September 7, 2018

(Dreamstime)

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Art lovers have always obsessed over the Mona Lisa's weird smile.  Is she happy, sad, maybe annoyed?  Well, two experts say they've finally figured out it:  Her smirk was probably due to an underactive THYROID.

Hypothyroidism can weaken the muscles in your face.  And they think that's why she's not sporting a bigger smile.  It can also cause swollen hands, thinning hair, and a lump in your neck.  And they think all those symptoms are visible in the painting too.

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