【科学60秒】鱼油：吃，还是不吃？_英语听力练习mp3下载-科学-沪江听力酷

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【科学60秒】鱼油：吃，还是不吃？

听力简介：

It’s been ____1____ for its healthful, anti-inflammatory properties. It’s been recommended for helping ease the pain of arthritis, preventing cancer and slowing memory loss. But some recent studies of fish oil show that it may not always act as advertised—and that ____2____.
First, the latest news. Researchers spent 18 months following almost 300 patients with ____3____ Alzheimer’s. Some took fish oil, others a placebo. And there was no difference cognitively between the two groups. The study is in the current Journal of the American Medical Association.
It’s a ____4____ on cancer. A study of more than 35,000 post-menopausal women found that those who took fish oil seemed half as likely to develop breast cancer as those who didn’t. That work was in the July issue of Cancer Epidemiology, Biomarkers & Prevention.
But a study in the October 15th issue of Cancer Research found that mice with inflamed bowels developed colitis and aggressive colon cancer when they were given high doses of fish oil.
So, fish oil might in fact have a healthful role in some circumstances. But you don’t want to swallow every ____5____.
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