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J G Eriksson a National Public Health Institute, Department of
Epidemiology and Health Promotion, Diabetes and Genetic Epidemiology
Unit, Mannerheimintie 166, FIN-00300 Helsinki, Finland, b MRC Environmental Epidemiology Unit (University of
Southampton), Southampton General Hospital, Southampton S016 6YD
Correspondence to: J G Eriksson
johan.eriksson{at}ktl.fi
Objective:
To determine how growth during infancy and childhood modifies the increased risk of coronary heart disease associated with small body size at birth.
What is already known on this topic
What this study adds
Design:
Longitudinal study.
Setting:
Helsinki, Finland.
Subjects:
4630 men who were born in the Helsinki
University Hospital during 1934-44 and who attended child welfare
clinics in the city. Each man had on average 18.0 (SD 9.5) measurements of height and weight between birth and age 12 years.
Main outcome measures:
Hospital admission or death
from coronary heart disease.
Results:
Low birth weight and low ponderal index
(birth weight/length3) were associated with increased risk
of coronary heart disease. Low height, weight, and body mass index
(weight/height2) at age 1 year also increased the risk.
Hazard ratios fell progressively from 1.83 (95% confidence interval
1.28 to 2.60) in men whose body mass index at age 1 year was below
16 kg/m2 to 1.00 in those whose body mass index was >19
(P for trend=0.0004). After age 1 year, rapid gain in weight and body
mass index increased the risk of coronary heart disease. This effect
was confined, however, to men with a ponderal index <26 at birth. In
these men the hazard ratio associated with a one unit increase in
standard deviation score for body mass index between ages 1 and 12 years was 1.27 (1.10 to 1.47; P=0.001).
Conclusion:
Irrespective of size at birth, low weight gain during infancy is associated with increased risk of coronary heart
disease. After age 1 year, rapid weight gain is associated with further
increase in risk, but only among boys who were thin at birth. In these
boys the adverse effects of rapid weight gain on later coronary heart
disease are already apparent at age 3 years. Improvements in
fetal, infant, and child growth could lead to substantial reductions in
the incidence of coronary heart disease.
Coronary heart disease is associated with low birth weight
The association with low weight gain in infancy is confirmed
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