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Arch Pediatr Adolesc Med. 2005;159:1188.

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In reply

We appreciate the comments of Dr Lappe on our longitudinal study of milk consumption and weight gain in adolescents.¹ To clarify a point in her letter, our earlier (2004) study of sugar-added beverages and weight gain was a longitudinal study as well.² The cross-sectional association she cited was from baseline data and not the major focus of that article, but it illustrates the risk in overinterpreting cross-sectional results. Children who were heavier at baseline drank less milk and more diet soda; we should not conclude from this that drinking more diet soda causes weight gain, nor that drinking less milk causes weight gain.

We view the randomized trial of Lappe et al³ as essentially consistent with our own findings. They reported that 27 nine-year-old girls assigned to calcium-rich diets gained the same weight, over 2 years, as 32 girls who maintained their usual diets. Because the girls assigned . . . [Full Text of this Article]

AUTHOR INFORMATION

Catherine S. Berkey, ScD