This paper examines how the obesity status of different children within the same family is related to a parent or sibling’s obesity. Analyzing results of a 2011 national survey of adults in 10,244 U.S. households, researchers found that the likelihood of childhood obesity varied with the number of children in a household, as well as their gender. In a single-child household, a child was 2.2 times more likely to be obese if a parent was obese. In households with two children, for the elder child, having an obese parent was associated with a 2.3 times greater likelihood of child obesity, and having an obese younger sibling was associated with a 5.4 times greater obesity likelihood. For a younger sibling in a two-child household, having an obese parent was not significantly related to obesity, but having an obese older sibling was associated with a 5.6 times greater likelihood of younger sibling obesity. Within-family sibling obesity was more strongly patterned between siblings of the same gender than between genders. For younger boys in two-child families, obesity was 11.4 times more likely with a male older sibling; and for younger girls in two-child families, obesity was 8.6 times more likely with a female older sibling.
Within-Family Obesity Associations: Evaluation of Parent, Child, and Sibling Relationships
This paper analyzes the role of prices in determining food purchases and nutrition using a detailed transaction-level observation for a large, nationally-representative sample of U.S. consumers over the years 2002-2007. Using structural demand estimates, researchers simulated the effect of a 20 percent product tax on soda, other sugar-sweetened beverages, packaged … More
Examining the Effects of In-Store Marketing on the Purchase of Excess, Non-Nutrient Calories and on Childhood Obesity
The impact of family food purchasing on child obesity is understudied, and little is known about the roles that consumer shopping behavior and local prices for goods with different nutritional content play in determining obesity prevalence. This project will use unique, nationally-representative scanned UPC data collected by Nielsen over a … More
The first 1,000 days, or the period from conception through age 2, is increasingly recognized as a critical period for the development of childhood obesity and its adverse consequences. This issue brief is based on two review papers that examined evidence on risk factors for developing childhood obesity and interventions … More