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Updated: May 31, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Familial instability and young children's physical health
Sharon H Bzostek1, Audrey N Beck
1Robert Wood Johnson Scholars in Health Policy Research, Harvard University, 1730 Cambridge Street, Suite 410, Cambridge, MA 02138, USA. sbzostek@rwj.harvard.edu
Insights
Family instability is linked to poorer child health outcomes, especially for children in stable parent relationships and those with frequent moves. This impacts early childhood physical health.
Area of Science:
- Pediatrics
- Sociology
- Public Health
Background:
- Family instability is a growing concern in early childhood.
- Previous research indicates potential links between family structure changes and child well-being.
- Understanding these associations is crucial for public health interventions.
Purpose of the Study:
- To examine the relationship between complex family instability patterns and physical health in young children.
- To determine how this association differs across various family types and health outcomes.
- To explore potential mediating mechanisms for the observed effects.
Main Methods:
- Utilized recent longitudinal data from a U.S. cohort of young children.
- Assessed multiple child health indicators at age five (obesity, asthma, overall health).
- Analyzed the impact of the number and timing of familial transitions.
Main Results:
- Familial instability was associated with worse child physical health.
- The association was more pronounced for children born to coresident parents (married or cohabiting).
- High levels of residential instability also correlated with poorer health outcomes.
Conclusions:
- Family instability negatively impacts early childhood physical health.
- Specific family structures and residential instability exacerbate these health risks.
- Further research into intervention strategies for at-risk families is warranted.
Abstract:
This paper uses recent longitudinal data about a cohort of young children born in the United States to mostly unmarried parents to examine the association between increasingly-complex patterns of family instability and physical health in early childhood. The analyses assess whether, and how, the association between family instability and child health varies across a number of family types. We consider several measures of children's health at age five (overweight/obesity, asthma diagnosis and overall health) and examine to what extent the association between family instability and child health varies across outcomes and depends on the number and timing of any familial transitions. We also explore a number of potential mechanisms through which family instability may affect child health. The results suggest that familial instability is related to worse child health, particularly among children born to coresident (married or cohabiting) biological parents and for children who experience high levels of residential instability.
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