Journal Article

Childhood Growth and Breast Cancer

B. L. De Stavola, I. dos Santos Silva, V. McCormack, R. J. Hardy, D. J. Kuh and M. E. J. Wadsworth

in American Journal of Epidemiology

Published on behalf of Johns Hopkins Bloomberg School of Public Health

Volume 159, issue 7, pages 671-682
Published in print April 2004 | ISSN: 0002-9262
Published online April 2004 | e-ISSN: 1476-6256 | DOI:
Childhood Growth and Breast Cancer

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Adult height is known to be positively associated with breast cancer risk. The mechanism underlying this association is complex, since adult height is positively correlated with age at menarche, which in turn is negatively associated with breast cancer risk. The authors used prospective data from a British cohort of 2,547 girls followed from birth in 1946 to the end of 1999 to examine breast cancer risk in relation to childhood growth. As expected, adult height was positively associated with age at menarche and breast cancer. In childhood, cases were taller and leaner, on average, than noncases. Significant predictors of breast cancer risk in models containing all components of growth were height velocity at age 4–7 years (for a one-standard-deviation increase, odds ratio (OR) = 1.54, 95% confidence interval (CI): 1.13, 2.09) and age 11–15 years (OR = 1.29, 95% CI: 0.97, 1.71) and body mass index velocity (weight (kg)/height (m)2/year) at age 2–4 years (OR = 0.63, 95% CI: 0.48, 0.83). The effects of these variables were particularly marked in women with early menarche (age <12.5 years). These findings suggest that women who grow faster in childhood and reach an adult height above the average for their menarche category are at particularly increased risk of breast cancer.

Keywords: body height; body weight; breast neoplasms; child; growth; menarche; Abbreviations: BMI, body mass index; CI, confidence interval; OR, odds ratio; SD, standard deviation.

Journal Article.  7547 words.  Illustrated.

Subjects: Public Health and Epidemiology

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