Obesity is a worldwide public health problem that demands significant attention. Several studies have found that maternal obesity has a negative effect on the duration of breastfeeding and delayed lactogenesis. The World 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 as breastfeeding-associated problems and discomfort in women assisted by the Spanish Health System. To this end, a cross-sectional observational study aimed at women who have been mothers between 2013 and 2018 in Spain was developed. The data was collected through an online survey of 54 items that was distributed through lactation associations and postpartum support groups between March and June 2019. Five thousand eight hundred seventy one women answered the survey. In the data analysis, Crude Odds Ratios (OR) and Adjusted Odds Ratios (AOR) were calculated through a multivariate analysis through binary and multinomial regression. A linear relationship was observed between the highest BMI figures and the reduction of the probability of starting skin-to-skin contact (AOR for obesity type III of 0.51 [95% CI 0.32, 0.83]), breastfeeding in the first hour (AOR for obesity type III of 0.58 [95% CI 0.36, 0.94]), and exclusive breastfeeding to hospital discharge (AOR for obesity type III of 0.57 [95% CI 0.35, 0.94]), as compared to women with normoweight. Women with higher BMI are less likely to develop successful breastfeeding than women with normoweight.

中文翻译：

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孕妇体重指数与母乳喂养开始及其相关问题之间的关系：在线调查。

肥胖是世界范围内的公共卫生问题，需要引起高度重视。几项研究发现，母体肥胖对母乳喂养的持续时间和泌乳时间延迟有负面影响。世界卫生组织已将身体最大指数（BMI）分为正常体重（正常体重）（BMI：18.5–24.9），超重（BMI：25–29.9），I级肥胖（30.0–34.9），II级肥胖（BMI： 35.0–39.9）和肥胖III级（BMI≥40.0）。这项研究的目的是描述由西班牙卫生系统协助的孕产妇BMI与母乳喂养率之间的关系，以及与母乳喂养有关的问题和不适。为此，针对西班牙在2013年至2018年之间成年妇女的女性进行了横断面观察研究。这些数据是通过对54个项目的在线调查收集的，这些调查是在2019年3月至6月之间通过泌乳协会和产后支持小组分发的.5871名妇女回答了该调查。在数据分析中，通过二元和多项式回归进行多元分析，计算出原油几率（OR）和调整后几率（AOR）。观察到最高的BMI值与开始皮肤接触的可能性（III型肥胖的AOR为0.51 [95％CI 0.32，0.83]）之间的线性关系，第一小时的母乳喂养（AOR为与具有正常体重的女性相比，III型肥胖为0.58 [95％CI 0.36，0.94]和纯母乳喂养到医院出院（III型肥胖为AOR 0.57 [95％CI 0.35，0.94]）。