（中央社台北23日电）纵慾寻欢或搞一夜情原本就有危险，如今想偷吃的人又多了个担心的原因，就是心脏病发作的风险可能比较大。 1 Z/ G' T+ D# y* V Z( w: ?4 `3 L % w$ l( y0 ^; x: ~+ m F 英国「每日邮报」（Daily Mail）报导，研究人员发现，偶发性行为比规律性行为容易导致心脏病发作。: s. f# c3 T. I( [5 G
& u0 V. D8 T5 R 报导指出，对不常做爱的人而言，因此心脏病发作的短期风险恐怕增加近乎3倍。较常有性行为的人则可减低引发心脏病的危险，这代表幸福的夫妻可能比较占优势。 / \: \, B+ d6 S$ f' F+ r7 d/ b: Z, R6 G3 R' N; ?
研究人员审查14篇关于心脏病发的研究后发现，若从事任何形式的「偶发」体能活动，也就是个人很少做的事情时，心脏会处于受压力的状态。 + p9 w& L9 v. `* j7 H/ u% T ! x( C) f( C+ ^; M& U 报导說，一般而言，从事这种活动时引发心脏病的风险，为一般活动的3.5倍。而在进行「偶发的」性行为，像是外遇偷吃或搞一夜情后，风险则达2.7倍。 . [- X K. m- K3 [3 @' ~3 ~' |6 e- L! [
「美国医学会期刊」（Journal of the AmericanMedical Association）刊出的评论报告說，不论是在性行为或体能活动方面越活跃的人，心脏病发的风险就越低。 7 a! M% `8 f% A3 D" q l, m+ B3 \" b7 z' ]
美国塔弗兹大学医学中心（Tufts Medical Center）及哈佛大学公共卫生学院（Harvard School ofPublic Health）的研究人员强调，实际因性爱引起心脏病发的人数并不多。3 B4 {3 R L& _8 E/ B
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报导說，性爱就像任何的体能活动，会增加心跳速率及血压，代表心脏必须更卖力运作。因此，性爱引发心脏毛病的风险，与相同强度体能活动引发心脏病的风险是一样的。 # ]' X5 i5 s% T4 K. S9 K$ X/ D0 H* B. ]4 N# G) t
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Adulterers beware... it could raise your risk of heart attack 23rd March 20113 e5 D( y* s& i
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Having a fling or one-night stand is already a risky business. But now there is another reason for adulterers to worry. 6 R! o3 q$ C& E+ W2 `- T , r9 Y: S) `2 G, @: J3 NThey are probably more at risk of having a heart attack. $ Z) K9 `! {. b+ y' x, C& a- w6 u" \" I( ^
Occasional sexual activity is much more likely to cause a heart attack than regular sex, researchers have found. 5 p0 V" e+ z+ E4 T" F8 l* K- \: B4 y6 u/ n
The short-term risk of having a heart attack increases almost three-fold among those who rarely make love.: K; ~6 e5 J! i5 G/ P% _7 Z& y$ F
& T. m8 O4 Q: V& IThose who have sex more often reduce the risk of it causing a heart attack – which means happily married couples could have the advantage.$ d% \ @3 j; h; H9 X
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A review of 14 studies of heart attacks found the heart is under strain during any form of ‘episodic’ physical activity – something an individual only does rarely.; @+ V& T1 F# O$ }
/ A, o! O1 t0 ]# o' m* YOverall, there is a 3.5 times higher risk of such activity triggering a heart attack.8 e0 `8 F8 r! @
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The risk after ‘episodic’ sexual activity – the kind associated with affairs and one-night stands – is 2.7 times higher. ( n$ d; ^/ f' Q; ^5 ~2 {1 E, @ 4 @7 m: O- N4 OBut the more active an individual is, either sexually or physically, the lower the risk falls, said the review in the Journal of the American Medical Association.2 F/ F! M, b& {3 f2 a
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The relative risk of heart attack caused by a burst of activity falls by around 45 per cent for each additional time a person indulges in it a week. The risk of sudden cardiac death also falls by 30 per cent. 3 a5 m# O7 r: m, a+ [) V- I " U1 g1 }" Q" y# E3 i f" g: uThe researchers, from the Tufts Medical Centre and Harvard School of Public Health, stress that the number of heart attacks actually caused by sex will be low.- R: o1 H+ T* U1 F6 c
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Like any physical activity, sex can increase the heart rate and blood pressure, which means the heart has to work harder. As a result, sex carries the same risk of triggering heart trouble as equally energetic forms of physical activity. - m4 P6 K3 F5 F6 A0 J2 w* g / _# n" `& Y+ Z; N$ CThe higher risk during activity is then offset by a lower ‘everyday’ background risk for people who are fitter because they are more active. r P, `8 u. ^; z, L
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Amy Thompson, senior cardiac nurse at the British Heart Foundation, said: ‘It’s important to distinguish between what causes a heart attack, and what potentially triggers it. ) _' P3 v/ Y0 e% `. y5 } 1 r' c. ~' w) }: S( Y. H'The study shows sex can act as a trigger, but this doesn’t change our viewpoint on the health benefits of physical activity. ( @# e* q! r4 }1 y: k7 |4 ` B. I" U# c4 d# J6 v! S
‘To help keep your heart healthy you should aim to do 30 minutes of moderate-intensity activity, such as a brisk walk or gardening, at least five times a week.8 r L! ]( i1 w7 P- [
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'Sex places no more stress on the heart than climbing a couple of flights of stairs, so people with or without heart disease need not avoid it.’
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