[社会新闻] 研究：性活动是心脏病最大诱因之一

2011年 2月 24日 BBC中文网1 [- O! c1 I; R4 D1 ]4 p
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英国著名医学杂志《柳叶刀》最新刊登的研究论文列举了心脏病的12大诱因。
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其中毒品、暴饮暴食、大喜大悲、性交以及空气污染都被认为能大大增加诱发心脏病的机率。
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比利时研究人员发现，要想最大可能地避免心脏病发作，应该杜绝下列行为：使用可卡因、暴饮暴食、大麻、负面情绪、体力消耗过度、正面情绪、暴怒、性活动、呼吸道感染、喝咖啡、空气污染。rs238848.rs.hosteurope.de; P: s$ f' F3 j! M5 Q

这一研究还列出了这些诱因的风险比率。, p5 o6 P/ B$ V/ _( y

其中，可卡因使心脏病发作风险增加2300%，暴饮暴食增加700%，性活动为300%。
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尽管如此，由于使用可卡因的人为少数，所以1%的人是因为可卡因诱发心脏病，而咖啡由于饮用普遍，因这一饮料诱发心脏病的人却占了5%。
空气污染
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超过2%的人在性交中或者过后诱发了心脏病。+ [; q- x" a& B2 | o

英国《独立报》引述剑桥大学公共风险理解学教授大卫·斯比格哈特的话说，如果大家都停止性活动，或许能减少心脏病发作，可是发出健康号召让大家为了心脏健康而杜绝性活动肯定没人听。

在以上所有的心脏病诱因中，空气污染造成的心脏病发作比率最高，达7%。这是因为几乎人人都是空气污染受害者。5 a2 x# A# J8 n/ ]; s9 w+ X
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心脏病专家认为，这一研究解释了为什么某人会在某时某刻突然心脏病发作，因为这些诱因就像是“驼背上的最后一根稻草”，让不堪重负的心脏突然之间停止工作。1 c& S- A$ C! K- W& r

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研究：性活动是心脏病最大诱因之一

Coffee, Sex, Smog Can All Trigger Heart Attack, Study Finds
Even a small rise in risk can end up causing many deaths when spread across the population rs238848.rs.hosteurope.de, C, o8 ^. k0 f  \

WEDNESDAY, Feb. 23 (HealthDay News) -- A major analysis of data on potential triggers for heart attacks finds that many of the substances and activities Americans indulge in every day -- coffee, alcohol, sex, even breathing -- can all help spur an attack.
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Because so many people are exposed to dirty air, air pollution while stuck in traffic topped the list of potential heart attack triggers, with the researchers pegging 7.4 percent of heart attacks to roadway smog.' s5 t0 j( f5 F+ o; Y9 o
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But coffee was also linked to 5 percent of attacks, booze to another 5 percent, and pot smoking to just under 1 percent, the European researchers found.
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Among everyday activities, exerting yourself physically was linked to 6.2 percent of heart attacks, indulging in a heavy meal was estimated to trigger 2.7 percent, and sex was linked to 2.2 percent.rs238848.rs.hosteurope.de+ Q9 |9 p# `' q8 A4 a

The researchers stressed that the risk for heart attack from any one of these factors to a particular person at any given time is extremely small. But spread out over the population, they can add up.! E5 j5 l7 l6 _  p

For example, air pollution is a minor trigger for heart attacks, but since so many people are exposed to smog, it triggers many more heart attacks than other more potent triggers, such as alcohol and cocaine.
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"Small risks can be highly relevant if they are widely distributed in the population," explained lead researcher Tim S. Nawrot, assistant professor of epidemiology at the Hasselt Centre for Environmental Sciences at Hasselt University in Diepenbeek, Belgium.

Commenting on the study, Dr. Gregg Fonarow, spokesman for the American Heart Association and professor of cardiology at the University of California, Los Angeles, added that "based on these findings, improvement in air quality and reduction in traffic may not just help the environment and increase quality of life, but also substantially decrease the incidence of [heart attack]."

The report is published in the Feb. 24 online edition of The Lancet.