Reuters Health Thursday, November 1, 2007 By Julie Steenhuysen CHICAGO (Reuters) - Breast-feeding seems to protect children from asthma later in life, but only when the mother does not have the respiratory disorder herself, U.S. researchers said on Thursday. They found that breast-feeding for more than four months helped improve lung function in children whose mothers did not have asthma. 报告指出健康的妈妈若持续喂母乳超过４个月，将有益於婴儿的肺功能。 But breast-fed children whose mothers had asthma did not benefit and actually showed a significant drop in lung function later in life. 但是若妈妈有气喘前科则不仅无益且会对婴儿的肺功能发展有害。 That does not mean women with asthma should stop breast-feeding. 然而这并非表示有气喘的妈妈们应该停止喂母乳。 The researchers cautioned that the study, published in the American Journal of Respiratory and Critical Care Medicine, was preliminary and the findings needed more study. 研究人员表示，这份报告仅是初步发现还需要更多资料加以佐证。 Breast milk is almost always considered best for infants. It can be digested easily and supplies antibodies that can protect babies from bacterial and viral infections, including many of the respiratory tract. Dr. Theresa Guilbert of the University of Wisconsin-Madison wanted to see if longer breast-feeding -- lasting four months or more -- improved lung function in children. She and colleagues at the Arizona Respiratory Center analyzed data from the Children's Respiratory Study in Tucson, which followed 1,246 healthy infants through adolescence. Of those, 697 had lung function tests from the ages of 11 to 16 that evaluated air flow and lung volume. For the most part, breast-fed children with non-asthmatic mothers had better lung volume and no decrease in air flow. 最主要的发现是，吃母乳长大的小孩，若妈妈没有气喘病史，有较好的肺容量，呼吸 气流量也正常。 But children of mothers with asthma who were breast-fed four months or more did not show any improvement. In fact, these children had a significant reduction in airflow. 而有气喘病史的妈妈的小孩，若被喂食母乳４个月或更久，不但没有帮助，反而在呼吸 的气流量部份会明显较少。 The reason, Guilbert suggested, may be altered lung growth. 原因可能指向是不健全的肺脏发展。 Guilbert believes breast milk may contain certain factors that promote lung development, factors that may be impaired in mothers with asthma. "These findings suggest that growth factors in milk have the potential to modify lung development, which might account for some of the protective effect of breast-feeding," she wrote. Researchers found a similar effect in mice born to non-asthmatic mothers who were breast-fed by mothers with asthma. These mice developed airway inflammation. 老鼠实验也有相似的发现，吃母乳的老鼠，若老鼠妈妈有气喘，会导致气道炎。 "It is important to emphasize that the clinical significance of these findings is unknown," Guilbert wrote. "Further study is needed to confirm our findings and to determine a biological basis for the relationships observed." （研究还不算完整，所以还有待未来更多的临床案例加以佐证才较具有可信度） （版上的文章真得让人受益良多啊，希望大家不会介意这篇是外国的报导 XD) -- An English Club in Kaohsiung http://aeclub.b.forumable.net --

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