Does Family Instability Make Girls Fat? Gender Differences Between Instability and Weight

Abstract

Data from the 1979 National Longitudinal Survey of Youth and the Young Adult file were used to explore the relationship between the number of family structure transitions experienced from birth to age 18 and weight status in young adulthood. This was done by testing both linear risk and threshold effect models by gender (N = 3,447). The findings suggest that a linear risk approach best describes the relationship between family instability during childhood and weight status in young adulthood. Specifically, the cumulative family structure transitions children experienced from birth to age 18 place females, but not males, at greater risk for being overweight/obese in young adulthood. Sensitivity analyses indicated that cumulative family structure instability—and not formations or dissolutions separately—drove the main results. Birth order did not affect the findings. Increasing children's support systems during times of instability may reduce female children's risk of being overweight/obese as young adults.

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