BACKGROUND: Understanding the natural history of @entity28 in a population may be a critical step toward developing effective interventions. OBJECTIVE: To assess the development of body mass and examine the role of race or ethnicity, sex, and birth year in @entity28 onset in young U.S. adults. DESIGN: Prospective cohort study. SETTING: The National Longitudinal Survey of Youth 1979, a national sample with oversampling of minority ethnic groups. @entity1 : 9179 @entity1 . MEASUREMENTS: Body mass index (BMI) calculated from 12 self-reported height and weight samples recorded between 1981 and 1998. Logistic regression identified predictors of @entity28 at age 35 to 37 years. Cox proportional hazards models compared the incidence of @entity28 by ethnicity and birth year. RESULTS: Overall, 26% of @entity1 and 28% of @entity1 were @entity28 (BMI > or = 30 kg/m2) by age 35 to 37 years. Race or ethnicity and baseline BMI were significant predictors of @entity28 . Obesity onset was 2.1 (95% CI, 1.6 to 2.7) times faster for black @entity1 and 1.5 (CI, 1.1 to 2.0) times faster for Hispanic @entity1 than for white @entity1 . The pattern for @entity1 differed: Overall, @entity28 developed most rapidly in Hispanic @entity1 , but relative rates of @entity28 onset for white @entity1 compared with black @entity1 varied according to age. The rate of @entity28 onset increased 26% to 28% over an 8-year span in birth year. CONCLUSIONS: Marked ethnic-based differences were found in rates of weight accumulation in young U.S. adults, with later birth cohorts experiencing earlier onset of @entity28 . To alter the course of @entity28 in the United States, interventions should target young adults, especially those of minority ethnic groups.

The natural history of the development of XXXX in a cohort of young U.S. adults between 1981 and 1998.

@entity1 :: ('9606', 'Species') :: ['women', 'PARTICIPANTS', 'persons', 'men'] @entity28 :: ('MESH:D009765', 'Disease') :: ['obese', 'obesity']
@entity28 :: (MESH:D009765,Disease) :: ['obesity']
