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Comparative Study
. 2015 Dec 23:15:1281.
doi: 10.1186/s12889-015-2611-7.

Breastfeeding is associated with waist-to-height ratio in young adults

Adam D Bohr  1 , Jason D Boardman  2 , Benjamin W Domingue  3 , Matthew B McQueen  4
Affiliations
Comparative Study

Breastfeeding is associated with waist-to-height ratio in young adults

Adam D Bohr et al. BMC Public Health. .

Abstract

Background: The current study investigated the association between breastfeeding and adult weight distribution using an emerging indicator of weight distribution, the waist-to-height ratio (WHtR).

Methods: The study sample consisted of two subsamples of individuals that were part of the National Longitudinal Study of Adolescent Health. One sample (n = 1,179) consisted of individuals from the sibling pair data. A second sample (n = 4,648) consisted of individuals that were not part of the paired data. Regression models were constructed to establish if there was a relationship between breastfeeding and two measures of weight distribution: WHtR and body mass index (BMI). Controls for parental socioeconomic status, maternal smoking, race, sex, age, birth weight, maternal BMI, genetic ancestry, and a genetic risk score (GRS) for obesity were included. In addition, a behavioral risk score (BRS) was constructed to control for other residual confounding factors.

Results: A significant, inverse relationship between breastfeeding and adult WHtR persisted in models constructed from the sibling pair sample (P = 0.002) and unrelated sample (P < 0.0001). This association remained significant with the inclusion of ancestry principal components, GRS, and a measure of maternal obesity.

Conclusions: The moderate association between breastfeeding and weight distribution persists into adulthood while controlling for potential confounders. This paper also provides evidence that the WHtR may be a superior outcome measure to BMI in studies investigating breastfeeding and obesity.

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