Despite the urgent public health implications, relatively little is yet known about the effect of peers on adolescent weight gain. We describe trends and features of adolescent BMI in a nationally representative dataset and document correlations in weight gain among peers. We find strong correlations between own body mass index (BMI) and peers' BMI's. Though the correlations are especially strong in the upper ends of the BMI distribution, the relationship is smooth and holds over almost the entire range of adolescent BMI. Furthermore, the results are robust to the inclusion of school fixed effects and basic controls for other confounding factors such as race, sex, and age. Some recent research in this area considers whether or not adolescent weight gain is caused by peers. We discuss the econometric issues in plausibly estimating such effects while accounting for growth spurts and difficulties in defining adolescent obesity. While our work identifies correlations between adolescent BMI and peers' BMI, it is not intended to and cannot fully address the existence of endogenous peer effects.
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http://dx.doi.org/10.1016/j.ehb.2009.05.002 | DOI Listing |
J Med Case Rep
January 2025
Department of Surgery, Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles and Keck School of Medicine of USC, Los Angeles, CA, USA.
Background: Classic congenital adrenal hyperplasia, primarily due to 21-hydroxylase deficiency, leads to impaired cortisol and aldosterone production and excess adrenal androgens. Lifelong glucocorticoid therapy is required, often necessitating supraphysiological doses in youth to manage androgen excess and growth acceleration. These patients experience higher obesity rates, hypertension, and glucose metabolism issues, complicating long-term health management.
View Article and Find Full Text PDFEur J Clin Nutr
January 2025
Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University of Athens, Kallithea, Athens, Attica, Greece.
Background: The long-term effects of breakfast on childhood z-BMI remain inconclusive.
Objective: To prospectively assess the impact of stable and altered breakfast consumption habits on z-BMI change over two years, in school-aged children across six European countries.
Methods: Data of 6,528 children (8.
BMJ Open
January 2025
Clinical and Translational Research, Steno Diabetes Center Copenhagen, Herlev, Denmark
Introduction: The global prevalence of people living with overweight has tripled since 1975 and more than 40% of Danish women enter pregnancy being overweight. With the increasing rates of obesity observed in children, adolescents and adults, there is an urgent need for preventive measures. Risk factors for childhood obesity include maternal overweight or obesity before conception and excessive weight gain during pregnancy.
View Article and Find Full Text PDFEur J Obstet Gynecol Reprod Biol
January 2025
Faculty of Medical Sciences of Minas Gerais Belo Horizonte Brazil.
Objective: Endometriosis involves the growth of endometrium-like cells outside the uterus, affecting reproductive-aged women. Symptoms such as dysmenorrhea, pelvic pain, and infertility significantly impair quality of life. Among therapeutic options, progestogens have demonstrated efficacy in managing pain and reducing recurrence rates.
View Article and Find Full Text PDFMatern Child Health J
January 2025
Faculty of Health Sciences, Department of Midwifery, Ağrı İbrahim Çeçen University, Ağrı, Turkey.
Purpose: The aim of this study is to determine the effect of supplemental nursing system on, sucking success, weight gain findings and bilirubin levels in newborns.
Design And Methods: The study was conducted as a randomized controlled trial. The population of the research consisted of 71 infants who received care and treatment at the Neonatal Intensive Care Clinic of the hospital located in a province in eastern Turkey between February and June 2023.
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