⇒Cheer up! Study of Great Depression shows hard times are good for your health | Mail Online ⇒Did The Great Depression Have A Silver Lining? Life Expectancy Increased By 6.2 Years ⇒The Upside of Recessions: Science Magazine ⇒Recessions may be good for your health - Science Fair - USATODAY.com ネタ元⇒Life and death during the Great Depression ― PNAS そんじゃーね。