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Adolescent self-control behavior predicts body weight through the life course: a prospective birth cohort study.

ABSTRACT: Weight gain has become one of the biggest issues for healthy aging in middle- and high-income countries. Self-control of emotional reward cues is an important behavioral factor for regulation of weight gain through voluntary diet control and physical activity.We tested the associations between teacher-rated self-control at ages 13 and 15 years, and measured body mass index (BMI) between ages 15 and 60-64 years, controlling for confounding factors such as affective symptoms and cognition, using 3873 study members in the Medical Research Council National Survey of Health and Development, also known as the British 1946 birth cohort.Multivariable regression analysis after adjustment for all covariates showed that lower self-control was associated with higher BMI in all measure points (P<0.05). Multilevel modeling using a cubic model showed that there was an association between self-control and BMI at 15 years in females (male: BMI=-0.00 kg m(-2) per 1 s.d. on the self-control score (95% confidence interval (CI): -0.12 to 0.11), P =0.94; female: BMI=-0.27 (-0.42 to -0.11), P<0.001). The association became stronger with age in both sexes (BMI=-0.065 (-0.082 to -0.048), P<0.001; BMI=-0.036 (-0.057 to -0.015), P<0.001). By age 60-64 years, the association between self-control and BMI in men had increased to -0.70 (-0.96 to -0.44) and -0.67 (-1.04 to -0.30) in women.Lower adolescent self-control was associated with higher BMI through the life course, and this becomes stronger with age. Investigations to test whether intervention to self-control improves obesity are recommended.

SUBMITTER: Koike S

PROVIDER: S-EPMC4704138 | biostudies-other | 2016 Jan

REPOSITORIES: biostudies-other

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Project description:RationaleThe prevalence of childhood asthma has been increasing worldwide in parallel with childhood obesity.ObjectivesWe investigated whether there is a temporal relationship between early life weight gain (reflecting growth velocity) and early life body mass index (BMI) attained status (reflecting accumulative weight) with future risk of asthma in the Boston Birth Cohort.MethodsThis report includes 1,928 children from the Boston Birth Cohort with a mean age of 7.8 years (standard deviation, 3.3 yr), enrolled at birth and followed prospectively. Asthma was defined using physician diagnosis code (International Classification of Diseases, Ninth Revision, Clinical Modification code 493.xx) in children 2 years and older. We categorized the children by their weight gain trajectory on the basis of changes in z-scores: slow (less than -0.67), on track (-0.67 to 0.67), rapid (0.67-1.28), and extremely rapid (>1.28); and by their BMI attained status (underweight, normal weight, and overweight) during the first 4, 12, and 24 months. Poisson regression models with robust variance estimation were applied to examine the relationship between early life weight gain/attained BMI and asthma.ResultsDuring the first 4 months of life, 37% had on-track weight grain, 22% had slow weight gain, 15% had rapid weight gain, and 26% had extremely rapid weight gain. At 4 months, 61% were normal weight, 7% were underweight, and 32% were overweight. In adjusted analyses, extremely rapid early life weight gain during the first 4 and 24 months of life were each associated with increased risks of asthma (risk ratio, 1.34 for extremely rapid weight gain at 4 months; 95% confidence interval [CI], 1.06-1.70; risk ratio, 1.32 for extremely rapid weight gain at 24 months; 95% CI, 1.00-1.75) Similarly, overweight at 4, 12, and 24 months were each associated with an increased risk of asthma. Analyses that further adjusted for birthweight or preterm birth showed similar findings.ConclusionsIn this predominantly urban U.S. low-income minority birth cohort, excessive early life weight gain and overweight status were both associated with an increased risk of asthma in childhood.

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Adolescent self-control behavior predicts body weight through the life course: a prospective birth cohort study.

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