Rosinger Asher
Department of Anthropology, University of Georgia, Athens, Georgia, 30602.
Am J Hum Biol. 2015 Jul-Aug;27(4):576-8. doi: 10.1002/ajhb.22672. Epub 2014 Dec 22.
The purpose of this study was to compare hydration status between lactating and non-lactating women in the hot-humid Amazon.
Fifty-four women (15-81 years) from two villages at different distances to the market provided urine samples, anthropometric measurements, and health recalls. Urine samples were analyzed for urine specific gravity (USG). Bivariate and multiple linear and logistic regressions tested differences in USG and dehydration (USG > 1.020) between women of different lactating status.
Lactating women (1.024 g/ml; 78% dehydrated) had significantly higher USG levels (β = 0.004; P = 0.011) than non-lactating women (1.020 g/ml; 50% dehydrated) and were significantly more likely to be dehydrated adjusting for covariates (OR: 4.05; 95% CI 1.1-14.7).
Women living in hot-humid rural environments with minimal access to clean water are at greater risk of dehydration when breastfeeding. Future research should examine lactating women longitudinally and assess whether chronic dehydration affects breast milk composition.
本研究旨在比较炎热潮湿的亚马逊地区哺乳期妇女和非哺乳期妇女的水合状态。
来自距离市场不同距离的两个村庄的54名妇女（15 - 81岁）提供了尿液样本、人体测量数据和健康回忆信息。对尿液样本进行尿比重（USG）分析。双变量以及多元线性和逻辑回归检验了不同哺乳状态妇女之间尿比重和脱水情况（尿比重>1.020）的差异。
哺乳期妇女（尿比重1.024 g/ml；78%脱水）的尿比重水平显著高于非哺乳期妇女（尿比重1.020 g/ml；50%脱水）（β = 0.004；P = 0.011），并且在调整协变量后，哺乳期妇女脱水的可能性显著更高（比值比：4.05；95%置信区间1.1 - 14.7）。
生活在炎热潮湿的农村环境且获得清洁水机会极少的妇女在哺乳期脱水风险更高。未来研究应纵向研究哺乳期妇女，并评估慢性脱水是否会影响母乳成分。
