（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。 " A( d( o0 l8 e! j2 Q0 m 6 o3 `2 {( g& p, u( S 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。 d3 V% c" F- }1 q* p( U
) `, ?& D8 x$ { 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。 8 K0 h1 H1 v+ s* d N. d5 H2 B. H- O* a
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。1 }! l5 Z, Y7 q( _" W+ Q
% E: p# g& J0 m4 H5 j. b: g/ b 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。 $ ]' k3 O. S- S8 c! V! t: w , C1 q/ r' b# q1 W. u Z1 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。 0 M) J' a- v; I* g - C) p) S$ J8 o @# y 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 O( f! {- L( S; x- p ) h1 X* O. v6 }+ W9 h6 f1 o* G 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。4 |4 ~9 C8 S5 \% G5 [' T& {6 N+ @
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1 ~! S4 C. Y3 i% c( SAdulterers beware... it could raise your risk of heart attack 23rd March 20114 X& q! i% I/ {) r; k( Z- W
3 P- y, ]5 }, ~; z; o1 h ~Having a fling or one-night stand is already a risky business. But now there is another reason for adulterers to worry. , J1 v; I9 p' l# G$ c* a5 e D, ]5 u9 K- {
They are probably more at risk of having a heart attack. * z/ G6 k# {+ c- ?9 P0 C8 G |% _( t- I; U) A2 e" `
Occasional sexual activity is much more likely to cause a heart attack than regular sex, researchers have found. " m [4 X$ Q/ q" T2 }9 p % ~, h% d( z1 QThe short-term risk of having a heart attack increases almost three-fold among those who rarely make love. ( g# x4 [& K* O. _; E) w8 G, ]. _! J" U/ W8 N. x3 X) s# V
Those who have sex more often reduce the risk of it causing a heart attack – which means happily married couples could have the advantage. : [7 Z2 F. Y6 ?9 \ 4 x. D* W8 h W) `, ] p# \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.5 ?3 Q$ |- ]3 M
7 @( v/ x; j% R( mOverall, there is a 3.5 times higher risk of such activity triggering a heart attack.. A/ {( D1 ^1 d, x% m) @
. S9 o* ^6 c$ \. f$ z- o) MThe risk after ‘episodic’ sexual activity – the kind associated with affairs and one-night stands – is 2.7 times higher.- Y& j% O/ f; s5 A1 Y
o4 l( E# T6 @8 q% X3 {& b7 R( ~But 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./ |- A z2 G2 ?4 p
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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 ?- A( A: k f1 P- K! R# X4 A9 y
The 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. 9 J- M: j2 f8 x; P: @ - n6 }) @, S6 J% K. |" J' GLike 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.6 w* F) r' c! g* x" |6 C- g; s
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The higher risk during activity is then offset by a lower ‘everyday’ background risk for people who are fitter because they are more active.9 i% A( C* A8 o' ]7 {: N) y
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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. ' x1 r* ~, t( Y 1 }/ Z9 J7 s, B/ U8 J2 F' M'The study shows sex can act as a trigger, but this doesn’t change our viewpoint on the health benefits of physical activity.1 L7 c/ c* n- _ V
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‘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. , I4 r5 \; G, W2 \8 K9 a9 ?% G8 n G+ V& ]5 g( \) Q/ V
'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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