Diet Rich in Tomatoes May Reduce Stroke Risk

时间：2012-10-10 06:40:56

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Diet Rich in Tomatoes May Reduce Stroke Risk

A long-term study has found that people who routinely eat a lot of tomatoes are less likely to suffer strokes. Tomatoes are rich in lycopene, an antioxidant that scientists believe reduces the risk of heart disease.

Researchers followed the dietary habits of more than 1,000 men living near the University of Eastern Finland. The subjects were divided into four groups based on how much lycopene was measured in their blood at the start of the study. After more than a dozen years, there were 25 strokes in a group of 258 men with the lowest levels of lycopene, compared to just 11 strokes in the high-lycopene group of 259 males, a reduction in stroke risk of 55 percent.

Larry Goldstein, director of the Duke University Stroke Center in Durham, North Carolina, believes lycopene may reduce the risk of stroke by protecting cells against the damaging effects of free radicals¹. These are harmful molecules² produced by the breakdown³ of food and toxic⁴ environmental substances such as tobacco smoke and radiation. Experts say antioxidants can reduce the inflammation and blood clotting⁵ that can lead to stroke.

Goldstein says lycopene is a powerful antioxidant.

“Having said that, other ..compounds in that class really haven’t been associated with reduced risk of stroke. So, again, this is an area for further research," said Goldstein.

Lycopene is the substance in fruits and vegetables that gives them their bright red or orange color, including not only tomatoes but red peppers, papayas and watermelon.

Goldstein cautions that studies such as the one carried out in Finland have to be repeated to confirm the results. He says participants questioned at the beginning of the study a dozen years ago may not remember what they ate over the course of the investigation⁶, and the findings would need to be repeated in different populations - and in groups of women, as well - to draw any firm conclusions.

What has been established, according to Goldstein, is that taking lycopene supplements does not appear to reduce the risk of stroke.

“So it may be something else that we are not measuring that really is leading to the better outcomes," he said.

The American Heart Association recommends a daily diet of five servings of fruits and vegetables, including tomatoes.

An article on lycopene and the reduced risk of stroke is published in the journal Neurology.

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1 radicals
n.激进分子( radical的名词复数 )；根基；基本原理；[数学]根数
参考例句：
Some militant leaders want to merge with white radicals. 一些好斗的领导人要和白人中的激进派联合。来自《简明英汉词典》 The worry is that the radicals will grow more intransigent. 现在人们担忧激进分子会变得更加不妥协。来自辞典例句

2 molecules
分子( molecule的名词复数 )
参考例句：
The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。 Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。

3 breakdown
n.垮，衰竭；损坏，故障，倒塌
参考例句：
She suffered a nervous breakdown.她患神经衰弱。 The plane had a breakdown in the air,but it was fortunately removed by the ace pilot.飞机在空中发生了故障，但幸运的是被王牌驾驶员排除了。

4 toxic
adj.有毒的，因中毒引起的
参考例句：
The factory had accidentally released a quantity of toxic waste into the sea.这家工厂意外泄漏大量有毒废物到海中。 There is a risk that toxic chemicals might be blasted into the atmosphere.爆炸后有毒化学物质可能会进入大气层。

5 clotting
v.凝固( clot的现在分词 )；烧结
参考例句：
The study was also based only on the one anti-clotting drug. 所用抗血栓药物也仅限于一种。来自互联网 A plasma protein that is converted into thrombin during blood clotting. 凝血原酶一种血浆蛋白质，在血液凝聚时转化成凝血''。'酵'。''''。'素'。''。来自互联网

6 investigation
n.调查，调查研究
参考例句：
In an investigation,a new fact became known, which told against him.在调查中新发现了一件对他不利的事实。 He drew the conclusion by building on his own investigation.他根据自己的调查研究作出结论。

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