Breast-feeding longer can make children smarter. That's the conclusion of a study published Monday in JAMA Pediatrics, a journal of the American Medical Association.
新近一项研究得出结论称,延长母乳喂养期可使孩子更加聪明。该研究发表于美国医学会(American Medical Association)主办的《美国医学会杂志•儿科学》上(JAMA Pediatrics)。
In many ways, the study won't surprise proponents of breast-feeding, who have long posited a connection between nursing and cognition and now have an additional piece of research to back up their argument. Skeptics could likely stick to the view that what matters most is how smart a baby's mom is, or that social pressure to breast-feed can have its own problems for children's development by creating stressed-out parents. However, the findings are likely to add muscle to public-health advocates' push to increase breast-feeding rates, which start out around 75% but slump to an average of 25% at a baby's first birthday, according to the Centers for Disease Control and Prevention.
就许多方面而言,这项研究并不会让母乳喂养的提倡者感到意外,他们在很早之前就提出母乳喂养与认知能力之间存在关联,现在他们只不过是又多了一项支持他们论点的研究。对于那些持怀疑态度的人,他们则可能会坚持认为最重要的是婴儿母亲的智商,或是认为针对母乳喂养的社会压力会导致家长不堪重负,而这本身会给孩子的发育带来麻烦。然而,目前这些研究发现可能会给公共健康倡议者推动提高母乳喂养比例的行动提供强有力的支持。美国疾病控制与预防中心(Centers for Disease Control and Prevention)的数据显示,母乳喂养的比例在婴儿出生伊始为75%左右,但在婴儿一周岁时便降低至25%的平均水平。
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