Destiny Rides Again as Twins Overeat

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Abstract
Does destiny indeed, as the Bard wrote, shape our ends (and middles)? In this issue of the Journal, Stunkard et al.1 and Macdonald and Stunkard2 have provided the most definitive answer to date to the question of whether childhood environment or genetic heritage is predominant in determining body-mass index in Western society. Similarly, Bouchard et al.3 at Laval University have concluded that destiny, in the form of our genetic makeup, has a great deal to do with the shape of our middles.Stunkard's group has drawn on the Swedish Adoption/Twin Study of Aging to evaluate the relation between body-mass . . .