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J Clin Endocrinol Metab. 2006 Apr;91(4):1382-9. Epub 2006 Jan 24.

Associations of childhood and adulthood height and the components of height with insulin-like growth factor levels in adulthood: a 65-year follow-up of the Boyd Orr cohort.

Author information

1
Defence Analytical Services Agency Health, Spur 7, Beckford Block, Ensleigh, Bath BA1 5AB, United Kingdom. issy.bray@bristol.ac.uk

Abstract

CONTEXT:

Taller individuals with longer legs have a higher risk of cancer but a lower risk of coronary heart disease.

OBJECTIVE:

We investigated whether childhood height and its components are associated with the IGF system in adulthood.

DESIGN AND PARTICIPANTS:

We analyzed data from 429 participants of the Boyd Orr cohort, for whom height measured in childhood (mean age, 7.4 yr) in 1937-1939 could be related to levels of IGF-I, IGF-II, IGF binding protein (IGFBP)-2, and IGFBP-3 in adulthood (mean age, 71.1 yr). In 385 participants, measured height in adulthood could be related to IGF levels.

RESULTS:

In fully adjusted models (controlling for age, sex, socioeconomic factors, lifestyle, and body mass index), childhood height and its components were not associated with adult circulating IGF-I, IGF-II, or IGFBP-2 levels. IGFBP-3 was 85.5 ng/ml higher (95% confidence interval, -11.6 to 182.5; P = 0.08) per sd increase in childhood trunk length and 83.6 ng/ml lower (95% confidence interval, -10.3 to 177.5; P = 0.08) per sd increase in childhood leg/trunk ratio. Height in adulthood was not associated with IGF-I, IGF-II, or IGFBP-3 and was inversely associated with IGFBP-2 (P = 0.05) after additionally controlling for childhood height.

CONCLUSION:

There was no evidence that associations of childhood height with cancer and coronary heart disease risk are mediated by IGF-I in adulthood. The anthropometric associations with IGFBP-2 and IGFBP-3 could be chance findings but warrant additional investigation. IGF levels in childhood may be more important determinants of long-term disease risk than adult levels.

PMID:
16434460
DOI:
10.1210/jc.2005-1722
[Indexed for MEDLINE]

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