RT Journal Article T1 Relationship between maternal body mass index with the onset of breastfeeding and its associated problems: an online survey A1 Ballesta Castillejos, Ana A1 Gómez Salgado, Juan A1 Rodríguez Almagro, Julián Javier A1 Ortiz Esquinas, Inmaculada A1 Hernández Martínez, Antonio AB Background: Obesity is a worldwide public health problem that demands significant attention. Several studies havefound that maternal obesity has a negative effect on the duration of breastfeeding and delayed lactogenesis. TheWorld Health Organization has classified Body Max Index (BMI) as normal weight (normoweight) (BMI:18.5–24.9),overweight (BMI:25–29.9), obesity grade I (30.0–34.9), obesity grade II (BMI: 35.0–39.9) and obesity grade III (BMI 40.0).The objective of this study is to describe the relationship between maternal BMI and breastfeeding rates, as well asbreastfeeding-associated problems and discomfort in women assisted by the Spanish Health System.Methods: To this end, a cross-sectional observational study aimed at women who have been mothers between 2013and 2018 in Spain was developed. The data was collected through an online survey of 54 items that was distributedthrough lactation associations and postpartum support groups between March and June 2019. Five thousand eighthundred seventy one women answered the survey. In the data analysis, Crude Odds Ratios (OR) and Adjusted OddsRatios (AOR) were calculated through a multivariate analysis through binary and multinomial regression.Results: A linear relationship was observed between the highest BMI figures and the reduction of the probability ofstarting skin-to-skin contact (AOR for obesity type III of 0.51 [95% CI 0.32, 0.83]), breastfeeding in the first hour (AOR forobesity type III of 0.58 [95% CI 0.36, 0.94]), and exclusive breastfeeding to hospital discharge (AOR for obesity type III of0.57 [95% CI 0.35, 0.94]), as compared to women with normoweight.Conclusions: Women with higher BMI are less likely to develop successful breastfeeding than women with normoweight. PB BMC SN 1746-4358 YR 2020 FD 2020-06 LK http://hdl.handle.net/10272/18887 UL http://hdl.handle.net/10272/18887 LA eng NO Ballesta Castillejos, A., Gómez Salgado, J., Rodríguez Almagro, J., Ortiz Esquinas, I., & Hernández Martínez, A. (2020). Relationship between maternal body mass index with the onset of breastfeeding and its associated problems: an online survey. International Breastfeeding Journal, 15(1). DOI: https://doi.org/10.1186/s13006-020-00298-5 DS Repositorio Institucional de la Universidad de Huelva RD 15 jun 2026