• Jennifer Tabler, Rachel M Schmitz, Claudia Geist, Rebecca L Utz, and Ken R Smith.
• 1 Department of Sociology and Anthropology, The University of Texas Rio Grande Valley , Edinburg, Texas.
• J Womens Health (Larchmt). 2018 Nov 1; 27 (11): 138913991389-1399.

BackgroundThere is a well-documented link between eating disorders (EDs) and adverse health outcomes, including fertility difficulties. These findings stem largely from clinical data or samples using a clinical measure (e.g., diagnosis) of EDs, which may limit our understanding of how EDs or disordered eating behaviors (DEBs) shape female fertility.MethodsWe compared reproductive outcomes from two longitudinal data sources, clinical and population-based data from the Utah Population Database (UPDB) (N = 6,046), and nonclinical community-based data from the National Longitudinal Study of Adolescent to Young Adult Health (Add Health) (N = 5,951). We examined age at first birth using Cox regression and parity using negative binomial regression.ResultsUsing the UPDB data, women with diagnosed ED experienced later ages of first birth (hazard rate ratio [HRR] = 0.38; p < 0.01) and lower parity (incidence rate ratio [IRR] = 0.38; p < 0.01) relative to women without EDs. Using the Add Health sample, women who self-reported DEB experienced earlier age of first birth (HRR = 1.16; p < 0.05) and higher parity (IRR = 1.17; p < 0.01) relative to women without DEB.ConclusionsConflicting results suggest two sets of mechanisms, physical/biological (sex specific) and social/behavioral (gender specific), may be simultaneously shaping the reproductive outcomes of women with histories of EDs or DEB. Discipline-specific methodology likely shapes Women's Health research outcomes.

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