Original article
The Influence of Adolescent Body Mass Index, Physical Activity, and Tobacco Use on Blood Pressure and Cholesterol in Young Adulthood

https://doi.org/10.1016/j.jadohealth.2008.06.010Get rights and content

Abstract

Purpose

To test the independent influences of adolescent tobacco use, physical activity/inactivity, and body mass index (BMI) on young adult cardiovascular risk factors.

Methods

This is a prospective cohort study using data from Waves I and III of the National Longitudinal Study of Adolescent Health (Add Health) (N = 14,322). We tested whether Wave I tobacco use, physical activity/inactivity, and BMI predicted self-report of being diagnosed with high blood pressure (BP) or high cholesterol by Wave III, while controlling for gender, age, race/ethnicity, use of healthcare, and Wave III tobacco use, physical activity/inactivity, BMI.

Results

Among young adults aged 18–26, 5.37% report high BP and 4.28% high cholesterol. Obese adolescents are more likely to report high BP by young adulthood than normal-weight adolescents, independent of all control variables including BMI in young adulthood (adjusted odds ratio [aOR] = 1.96; 95% confidence interval = [1.50–2.57]). Overweight and obese adolescents are more likely to report high cholesterol by young adulthood than normal-weight adolescents, independent of all control variables including BMI in young adulthood (aOR = 1.47 [1.14–1.90] and 2.05 [1.44–2.91], respectively). Adolescent tobacco use and physical activity/inactivity do not independently predict reported high BP or cholesterol.

Conclusions

The odds of overweight and obese adolescents reporting a diagnosis for two cardiovascular risk factors by young adulthood are 1.5 to two times higher than normal-weight adolescents, regardless of BMI in young adulthood. The impact of transient and sustained increases in adolescent BMI on the evolution of cardiovascular risk warrants further investigation.

Section snippets

Study design and sample

This prospective cohort study uses data from Add Health. The University of North Carolina institutional review board approved all Add Health study procedures, and the Research Triangle Institute institutional review board approved this project.

The sampling design for Add Health has been described in detail elsewhere [13], [14]. In brief, the original sample was drawn from school enrollment rosters for students in grades 7 to 12 early in the 1994 to 1995 school year. A sample of 80 high schools

Sample description

Of the 18,924 Add Health participants in the nationally representative weighted Wave I sample, 14,322 (75.7%) were relocated and reinterviewed at Wave III. Essentially all Wave III respondents gave responses to the two items we used as outcome variables and were included in our final sample (N = 14,318). Using weighted data, our sample reflects a nationally representative sample of adolescents, now in young adulthood, that is approximately one-half female (48.6%) and racially and ethnically

Discussion

We found that the odds of obese adolescents reporting a diagnosis of high blood pressure or high cholesterol by young adulthood are 1.5 to two times higher than the odds of adolescents who are not obese, regardless of their weight in young adulthood. Although our results rely on reported measures, and blood pressure or cholesterol were not measured in this study during adolescence or adulthood, our results suggest that BMI during adolescence may make a unique contribution to the evolution of

Acknowledgments

We would like to thank Eliana Miller Perrin, MD, MPH, for her helpful review of earlier versions of this manuscript.

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