The Louvre said Monday that the Mona Lisa is deteriorating much more quickly than previously thought. “The thin, poplar wood panel on which the artwork is painted has become deformed since conservation experts last evaluated the condition of the painting, the Louvre said. The artwork is inspected every 1-2 years. The Louvre said the condition of the Mona Lisa was causing “some worry” and that a new study has been launched, but one that will allow the painting to remain in the public eye.”