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    纽约路透社电 据《新科学家》杂志上的研究报告：孕妇要限制鱼类摄入，因为富含油的鱼类，尤其是鲭鱼、鲑鱼和沙丁鱼等的汞含量很高，这将对孕妇造成伤害。

    美国学者Fei Xue博士及其同事检测了居住在密西根州的1024名孕妇头发中汞的含量，并比较了她们分娩的时间。他们发现早产时间大于两周的孕妇，头发中平均汞含量是其他妇女的两倍。而且总体上来说，这些孕妇进食富含油的鱼类也更多，尤其是罐装鱼。

    同时，他们也指出该研究存在一些不足，例如，这些孕妇所回想起来的进食鱼类食物的量可能不够准确，这些孕妇也有可能还同时暴露于其他汞源中。Fei Xue博士称，在这种危险被确定之前，孕妇可以进食鱼油补充剂来代替鱼类食物。

    但是，专家又提醒，孕妇乃至每个人都必须进食足够的鱼类来保持身体健康。英国食品标准局称，孕妇每周需要进食两次鱼类食物，哺乳期妇女每周也需要进食两份（每份大约为140克）富含油的鱼。但是她们要避免进食鲨鱼、马林鱼和旗鱼等汞及其他污染物含量均特别高的鱼类。

Pregnant? Avoid fish...
13 Oct, 2006 1253hrs ISTIANS

NEW YORK: Researchers in the US have warned pregnant women to limit their fish intake citing high mercury levels in oily fish.

The high mercury levels in fish such as mackerel, salmon and sardines could cause them harm, reported the online edition of *** News quoting a report published in the New Scientist magazine.

Dr. Fei Xue and colleagues looked at 1,024 pregnant women living in Michigan and measured the amount of mercury they had in their hair and compared this with the date that the women delivered their babies.

The women who gave birth more than two weeks early were three times as likely to have double the average mercury level in their hair samples, the researchers said. On the whole, these women also tended to eat more oily fish, particularly canned fish.

Only 44 of the women, however, gave birth prematurely, and the researchers said more work was needed to corroborate their findings.

They also pointed out that the women were asked to recall how much fish they had eaten, which might be inaccurate. It was also possible that the women could have been exposed to mercury from other sources too, they said.

Xue said until the risks become clearer, women could take fish oil supplements instead.

But experts warn it is important for pregnant women, and indeed everyone, to eat enough fish to keep healthy. Pregnant women should eat fish twice a week, says the Food Standards Agency.

But they should avoid shark, marlin and swordfish because these fish are particularly high in mercury and other pollutants.

Women who are breastfeeding and those trying for a baby should also eat two portions of oily fish per week. Other women, and men and boys, can eat up to four portions per week. One portion is about 140g of fish - one tuna steak, for example.

http://timesofindia.indiatimes.com/articleshow/2165930.cms

编辑：蓝色幻想