Journal Article

Body Mass Index in Adolescence in Relation to Total Mortality: 32-Year Follow-up of 227,000 Norwegian Boys and Girls

Anders Engeland, Tone Bjørge, Anne Johanne Søgaard and Aage Tverdal

in American Journal of Epidemiology

Published on behalf of Johns Hopkins Bloomberg School of Public Health

Volume 157, issue 6, pages 517-523
Published in print March 2003 | ISSN: 0002-9262
Published online March 2003 | e-ISSN: 1476-6256 | DOI: http://dx.doi.org/10.1093/aje/kwf219
Body Mass Index in Adolescence in Relation to Total Mortality: 32-Year Follow-up of 227,000 Norwegian Boys and Girls

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A large number of studies have explored the relation between body mass index (BMI) and mortality in adults. The relation between BMI in adolescence and mortality has been investigated to a lesser extent. It has been suggested that all-cause mortality is elevated among those who were overweight during adolescence, but the limitation of previous studies has been study size. The present study explored this relation in a Norwegian cohort of 227,003 boys and girls, aged 14–19 years, whose height and weight were measured during tuberculosis screening in 1963–1975. These persons were followed for an average of 31.5 years (about 7.2 million person-years). A total of 7,516 deaths were registered. Multivariate Cox proportional hazards regression models were used in the analyses. An increasing risk of death by increasing BMI in adolescence was observed. Mortality among males whose baseline BMI was between the 85th and 95th percentiles and above the 95th percentile in the US reference population was 30% and 80% higher, respectively, than that among those whose baseline BMI was between the 25th and 75th percentiles. The corresponding rates among females were 30% and 100%. The excess mortality among adolescents whose BMI was high was not clearly manifested before they reached their thirties. Hence, BMI in adolescence is predictive of adult mortality.

Keywords: adolescence; body mass index; cohort studies; mortality; Abbreviations: BMI, body mass index; CDC, Centers for Disease Control and Prevention; NCHS, National Center for Health Statistics.

Journal Article.  4048 words.  Illustrated.

Subjects: Public Health and Epidemiology

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