"There's also the fact that, both sexually and in terms of bones, boys and girls do develop at a different rate," she said. "To get an accurate look at the impact of teenage milk consumption, maybe the timelines shouldn't have been lined up to be exactly the same."
She also questioned how accurate the self-reports of past milk consumption might be.
"The ability to estimate what you ate a year ago is pretty difficult, not to mention decades back," Weaver said. "Boys and girls have different self-image perceptions, which we know influence what they tell you they eat. Girls always under-report; boys always over-report. That might correspond with milk consumption too."
"This is a very interesting hypothesis, but the finding just doesn't play out very logically," Weaver said. "No one should walk away from this study thinking that they or their kids should avoid milk when young."
For more on milk and teens, visit the U.S. National Institute of Child Health and Human Development.
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