Aaron M Drucker1, Eliza I Pope2, Alison E Field3, Abrar A Qureshi4, Orianne Dumas5, Carlos A Camargo6. 1. Division of Dermatology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Women's College Research Institute and Department of Medicine, Women's College Hospital, Toronto, Ontario, Canada; Department of Dermatology, Warren Alpert Medical School of Brown University, Providence, RI. Electronic address: aaron.drucker@wchospital.ca. 2. Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada. 3. Department of Epidemiology, School of Public Health, Brown University, Providence, RI; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass. 4. Department of Dermatology, Warren Alpert Medical School of Brown University, Providence, RI; Department of Epidemiology, School of Public Health, Brown University, Providence, RI; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass. 5. INSERM, VIMA: Aging and Chronic Diseases, Epidemiological and Public Health Approaches, Villejuif, France; Univ Versailles St-Quentin-en-Yvelines, Montigny le Bretonneux, France. 6. Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass; Department of Emergency Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Mass; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Mass.
Abstract
BACKGROUND: Maternal weight status may contribute to the development of atopic disorders in children. OBJECTIVE: The objective of this study was to assess associations of maternal pre-pregnancy body mass index (BMI) and gestational weight gain (GWG) with risk of atopic dermatitis (AD) in children. METHODS: Maternal pre-pregnancy BMI and GWG were assessed by questionnaire through the Growing Up Today Study (GUTS), a prospective cohort study of US children. Mothers reported whether GUTS participants had ever been diagnosed with AD by a clinician in either 1997 or 1999, when GUTS participants were between 10 and 17 years old. We used multivariable logistic regression to estimate the association of BMI and GWG with AD in offspring (expressed as odds ratios [ORs] with 95% CIs). RESULTS: Among 13,269 GUTS participants, 2,058 (16%) had childhood AD. Higher maternal pre-pregnancy BMI was not associated with AD (P trend = .48). In contrast, GWG was associated with increased AD risk (P trend = .005). Compared with children of mothers who gained 25 to 34 lb, children of mothers who gained 35 to 44 lb (OR, 1.11; 95% CI, 0.98-1.26) and 45 lb or more (OR, 1.23; 95% CI, 1.05-1.43) had an increased risk of AD. These associations appeared stronger with pre-pregnancy BMI greater than 25 (GWG, 35-44 lb: OR, 1.20; 95% CI, 0.84-1.69; GWG, ≥45 lb: OR, 1.57; 95% CI, 1.07-2.31), but the statstical interaction between BMI and GWG was not significant. CONCLUSIONS: In this study, increased GWG was associated with increased risk of AD in offspring. This supports existing evidence that prenatal exposures contribute to the development of atopic disorders.
BACKGROUND: Maternal weight status may contribute to the development of atopic disorders in children. OBJECTIVE: The objective of this study was to assess associations of maternal pre-pregnancy body mass index (BMI) and gestational weight gain (GWG) with risk of atopic dermatitis (AD) in children. METHODS: Maternal pre-pregnancy BMI and GWG were assessed by questionnaire through the Growing Up Today Study (GUTS), a prospective cohort study of US children. Mothers reported whether GUTS participants had ever been diagnosed with AD by a clinician in either 1997 or 1999, when GUTS participants were between 10 and 17 years old. We used multivariable logistic regression to estimate the association of BMI and GWG with AD in offspring (expressed as odds ratios [ORs] with 95% CIs). RESULTS: Among 13,269 GUTS participants, 2,058 (16%) had childhood AD. Higher maternal pre-pregnancy BMI was not associated with AD (P trend = .48). In contrast, GWG was associated with increased AD risk (P trend = .005). Compared with children of mothers who gained 25 to 34 lb, children of mothers who gained 35 to 44 lb (OR, 1.11; 95% CI, 0.98-1.26) and 45 lb or more (OR, 1.23; 95% CI, 1.05-1.43) had an increased risk of AD. These associations appeared stronger with pre-pregnancy BMI greater than 25 (GWG, 35-44 lb: OR, 1.20; 95% CI, 0.84-1.69; GWG, ≥45 lb: OR, 1.57; 95% CI, 1.07-2.31), but the statstical interaction between BMI and GWG was not significant. CONCLUSIONS: In this study, increased GWG was associated with increased risk of AD in offspring. This supports existing evidence that prenatal exposures contribute to the development of atopic disorders.
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