Childhood exposure to parental smoking and life-course overweight and central obesity

Publication

Annals of Medicine

Author(s)

Johanna M. Jaakkola, Suvi P. Rovio, Katja Pahkala, Jorma Viikari, Tapani Rönnemaa, Antti Jula, Harri Niinikoski, Juha Mykkänen, Markus Juonala, Nina Hutri-Kähönen, Mika Kähönen, Terho Lehtimäki & Olli T. Raitakari

Abstract

Objective:
To evaluate the association between childhood parental smoking exposure and the risk of overweight/obesity from childhood to adulthood.

Methods:
This study leverages the data from two longitudinal population based cohort studies, the Cardiovascular Risk in Young Finns Study between years 1980–2011/2012 (YFS; N = 2,303; baseline age 3–18 years) and the Special Turku Coronary Risk Factor Intervention Project between years 1989–2009/2010 (STRIP; N = 632; baseline age 7 months). Weight, height and waist circumference were measured from childhood to adulthood. Overweight/obesity was defined as body mass index ≥25 kg/m2 in adults and using the Cole criteria in children. Central obesity was defined as waist circumference > 100/90 cm in men/women and as a waist-to-height ratio > 0.50 in children. Statistical analyses were adjusted for age, sex, socioeconomic status, smoking, birth weight, parental ages, diet and physical activity.

Results:
Childhood parental smoking exposure was associated with increased risk for life-course overweight/obesity (YFS: RR1.13, 95%CI 1.02–1.24; STRIP: RR1.57, 95%CI 1.10–2.26) and central obesity (YFS: RR1.18, 95%CI 1.01–1.38; STRIP: RR1.45, 95%CI 0.98–2.15).

Conclusions:
Childhood exposure to parental smoking is associated with increased risk of overweight/obesity over the life-course.

Date

February 22, 2021

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