Document Detail


Birthweight, childhood social class, and change in adult blood pressure in the 1946 British birth cohort.
MedLine Citation:
PMID:  14568738     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The negative effect of birthweight on systolic blood pressure has been suggested to be initiated in utero and amplified with age. We aimed to investigate this hypothesis. METHODS: A sample of 3634 people from a birth cohort study of men and women born in Britain in 1946 were included in analyses. Cohort members have been contacted regularly since birth, and systolic and diastolic blood pressures were measured at ages 36, 43, and 53 years. Multilevel models, with blood pressure as a repeated outcome, were used to test the amplification hypothesis and to compare results for birthweight with those for childhood social class. FINDINGS: Considering both men and women together, a consistent negative association between birthweight and systolic blood pressure was noted from age 36 to 53 years, but no evidence was recorded of substantial amplification with age. A 1 kg higher birthweight was associated with a slower mean increase in systolic blood pressure by -0.4 mm Hg (95% CI -1.3 to 0.4; p=0.3) per 10-year increase in age. Birthweight was not associated with diastolic blood pressure at any age. People from a manual social class in childhood had higher systolic and diastolic blood pressure than did those from a non-manual class. The effect on systolic blood pressure rose with age, by 1.0 mm Hg (95% CI 0.1 to 2.0; p=0.03) per 10 years, but was largely accounted for by current body-mass index, which was an increasingly strong determinant of blood pressure. INTERPRETATION: These findings suggest that weight control throughout life is key to prevention of raised blood pressure during middle age. Understanding the link between the early childhood socioeconomic environment and adult obesity could make this strategy more effective.
Authors:
Rebecca Hardy; Diana Kuh; Claudia Langenberg; Michael E J Wadsworth
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Lancet     Volume:  362     ISSN:  1474-547X     ISO Abbreviation:  Lancet     Publication Date:  2003 Oct 
Date Detail:
Created Date:  2003-10-21     Completed Date:  2003-12-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985213R     Medline TA:  Lancet     Country:  England    
Other Details:
Languages:  eng     Pagination:  1178-83     Citation Subset:  AIM; IM    
Affiliation:
Medical Research Council National Survey of Health and Development, Department of Epidemiology and Public Health, Royal Free and University College Medical School, WC1E 6BT, London, UK. rebecca.hardy@ucl.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aging / physiology*
Birth Weight / physiology*
Blood Pressure / physiology*
Child
Child, Preschool
Cohort Studies
Female
Great Britain
Health Surveys
Humans
Infant
Infant, Newborn
Male
Middle Aged
Social Class*
Systole / physiology*
Comments/Corrections
Erratum In:
Lancet. 2005 May;365(9471):1620

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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