Maternal obesity during pregnancy and premature mortality from cardiovascular event in adult offspring: follow-up of 1 323 275 person years

Reynolds, R. M., Allan, K. M., Raja, E. A., Bhattacharya, S., McNeill, G., Hannaford, P. C., Sarwar, N., Lee, A. J., Bhattacharya, Siladitya ORCID: https://orcid.org/0000-0002-4588-356X and Norman, J. E. 2013. Maternal obesity during pregnancy and premature mortality from cardiovascular event in adult offspring: follow-up of 1 323 275 person years. BMJ 347 , f4539. 10.1136/bmj.f4539

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Abstract

Objectives To determine whether maternal obesity during pregnancy is associated with increased mortality from cardiovascular events in adult offspring. Design Record linkage cohort analysis. Setting Birth records from the Aberdeen Maternity and Neonatal databank linked to the General Register of Deaths, Scotland, and the Scottish Morbidity Record systems. Population 37 709 people with birth records from 1950 to present day. Main outcome measures Death and hospital admissions for cardiovascular events up to 1 January 2012 in offspring aged 34-61. Maternal body mass index (BMI) was calculated from height and weight measured at the first antenatal visit. The effect of maternal obesity on outcomes in offspring was tested with time to event analysis with Cox proportional hazard regression to compare outcomes in offspring of mothers in underweight, overweight, or obese categories of BMI compared with offspring of women with normal BMI. Results All cause mortality was increased in offspring of obese mothers (BMI >30) compared with mothers with normal BMI after adjustment for maternal age at delivery, socioeconomic status, sex of offspring, current age, birth weight, gestation at delivery, and gestation at measurement of BMI (hazard ratio 1.35, 95% confidence interval 1.17 to 1.55). In adjusted models, offspring of obese mothers also had an increased risk of hospital admission for a cardiovascular event (1.29, 1.06 to 1.57) compared with offspring of mothers with normal BMI. The offspring of overweight mothers also had a higher risk of adverse outcomes. Conclusions Maternal obesity is associated with an increased risk of premature death in adult offspring. As one in five women in the United Kingdom is obese at antenatal booking, strategies to optimise weight before pregnancy are urgently required.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine
Publisher:	BMJ Publishing Group
ISSN:	1756-1833
Date of First Compliant Deposit:	10 December 2018
Date of Acceptance:	13 August 2013
Last Modified:	04 May 2023 03:41
URI:	https://orca.cardiff.ac.uk/id/eprint/117541

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