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July 11, 2007

Comparison of Weight-Loss Diets

JAMA. 2007;298(2):173-175. doi:10.1001/jama.298.2.174-a

To the Editor: The A TO Z Weight Loss Study reported by Dr Gardner and colleagues1 aimed to compare weight-loss diets that varied in the proportion of carbohydrate intake. However, to conclude that differences in the diets' efficacy were due to their macronutrient content, the study would have needed to control for all other elements of treatment. Yet the diets in this study greatly varied in their relative emphasis on behavior modification. Both the Atkins and LEARN programs strongly emphasized multiple behavioral treatment strategies.1 These strategies are the backbone of behavioral weight control treatment, a widely used evidence-based treatment in its own right.2

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