1Program in International and Community Nutrition,Department of Nutrition,University of California,Davis,1 Shields Avenue,Davis,CA 95616,USA.
3International Center for Diarrhoeal Disease Research,Bangladesh,Dhaka,Bangladesh.
Public Health Nutr. 2017 Aug;20(11):1928-1940. doi: 10.1017/S1368980017000672. Epub 2017 Jun 20.
To: (i) determine the prevalence of self-reported eating less and eating down during early and late pregnancy and postpartum, and explore risk factors associated with eating less; (ii) examine the association between eating less and diet quality; and (iii) determine the association between eating less and weight gain during pregnancy.
Data were collected longitudinally from a cohort of women participating in a community health programme. Diet was assessed at three time points (≤20 weeks' gestation, 36 weeks' gestation, 6 months' postpartum), body weight was measured during study enrolment (≤20 weeks' gestation) and at 36 weeks' gestation, and information about the woman and her household was collected at enrolment.
The Rang-Din Nutrition Study in the Rangpur and Dinajpur districts of Bangladesh.
Women (n 4011).
The prevalence of self-reported eating less differed by time point (75·9 % in early pregnancy, 38·8 % in late pregnancy, 7·4 % postpartum; P<0·001). The most common reason for eating less across all time periods was food aversion or loss of appetite. Women who reported eating less in late pregnancy had consumed animal-source foods less frequently in the preceding week than women who reported eating more (mean (sd): 11·7 (7·4) v. 14·8 (9·2) times/week; P<0·001) and had lower weekly weight gain than women who reported eating more (mean (se): 0·27 (0·004) v. 0·33 (0·004) kg/week; P<0·001).
Eating less has negative implications with respect to diet quality and pregnancy weight gain in this context.
（一）确定早孕期、晚孕期和产后报告的食量减少和吃得少的流行率，并探讨与食量减少相关的风险因素；（二）研究吃得少与饮食质量之间的关联；（三）确定吃得少与孕期体重增加之间的关联。
数据来自参加社区健康计划的妇女队列的纵向收集。在三个时间点（妊娠≤20 周、36 周妊娠、产后 6 个月）评估饮食，在研究入组时（妊娠≤20 周）和 36 周妊娠时测量体重，并在入组时收集妇女及其家庭的信息。
孟加拉国朗布尔和迪纳杰布尔地区的朗格-丁营养研究。
妇女（n=4011）。
报告食量减少的流行率因时间点而异（早孕期 75.9%、晚孕期 38.8%、产后 7.4%；P<0.001）。在所有时期，食量减少的最常见原因是食物厌恶或食欲不振。报告晚孕期吃得少的妇女在前一周食用动物源性食物的频率低于报告吃得较多的妇女（均值（标准差）：11.7（7.4）次/周比 14.8（9.2）次/周；P<0.001），并且每周体重增加低于报告吃得较多的妇女（均值（SE）：0.27（0.004）kg/周比 0.33（0.004）kg/周；P<0.001）。
在这种情况下，吃得少对饮食质量和孕期体重增加有负面影响。
