Research & Practice

A twin study of the relation between age at dieting onset and to adult BMI and dieting behaviors

The association between dieting behaviors and weight gain has been well documented in numerous studies. There is an ongoing debate, however, whether individuals who are predisposed to a greater BMI are less likely to successfully diet, or if dieting behaviors result in a greater BMI. Moreover, an early age at dieting onset may be a particular risk factor for higher adult BMI and risky dieting behaviors. Various studies indicate that there is a considerable amount of heritability and genetic predisposition for BMI. One study in particular analyzed the genetic and environmental environmental influences on BMI from adolescence into adulthood in twins. It is still unclear whether individuals diet as a means to counter their genetic tendency towards a greater weight or if dieting behaviors arise from environmental factors, which ultimately leads to subsequent weight gain. Twin studies provide an opportunity to examine these questions. This study highlights the role of genetic predisposition on dieting and weight gain by studying twins.

Materials Available


Project Type(s): Master's Thesis

Author(s): Erin Enriquez

Program(s): Master of Science

Year: 2012

Adviser(s):