Popkin B M, Bilsborrow R E, Akin J S
Science. 1982 Dec 10;218(4577):1088-93. doi: 10.1126/science.7146896.
Breast-feeding is important to infant nutrition, morbidity, and mortality, and to postpartum amenorrhea (hence to birth intervals). Evidence on breast-feeding patterns in low-income countries from nationally representative World Fertility Surveys and secondary sources shows that in all but a few such countries most children are breast-fed for at least a few months. The limited evidence available on trends seems to indicate a decline in the duration of breast-feeding, but in most of Asia and Africa breast-feeding is almost universal during at least the first 6 months. Earlier weaning is common in Latin America.
母乳喂养对婴儿营养、发病率和死亡率以及产后闭经(进而对生育间隔)都很重要。来自具有全国代表性的世界生育率调查及二手资料的关于低收入国家母乳喂养模式的证据表明,除少数几个这样的国家外,在所有其他低收入国家,大多数儿童至少母乳喂养几个月。关于趋势的现有有限证据似乎表明母乳喂养持续时间有所下降,但在亚洲和非洲的大多数地区,至少在最初6个月内母乳喂养几乎普及。在拉丁美洲,较早断奶很常见。