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In the 1970s, a pair of Danish researchers ventured north of the Arctic Circle and into medical lore. Studying a scattered Inuit population, they concluded that eating plenty of fish and other marine animals protected this group from heart disease.

For most, the "flapper" evokes images of finger-curled bobs, drop-waisted dresses and endless Charlestoning, like a scene from Baz Luhrmann's The Great Gatsby on a loop.

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