（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。 8 L4 W4 y# f6 x' ]8 S L* ]- y. [( i' ]3 K- N
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。+ P7 c. f* V+ b4 M
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职场偷情7 C4 s0 P8 R. d; u# L. h
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Adulterers beware... it could raise your risk of heart attack 23rd March 2011% [3 {- e6 ^# `( M- j& K2 z
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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. ) |$ c |/ k0 h5 @4 w" A4 G% w) [; d- z
They are probably more at risk of having a heart attack." O# F6 l7 e1 X# z R5 Z, j7 T
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Occasional sexual activity is much more likely to cause a heart attack than regular sex, researchers have found.9 ]4 T8 }: m* [) u# g% x
0 K7 k# P2 M5 \' a }The short-term risk of having a heart attack increases almost three-fold among those who rarely make love. 3 @) ?/ t& O6 Z; q* X 7 ~4 u! w! K c: w& s/ D2 h* cThose who have sex more often reduce the risk of it causing a heart attack – which means happily married couples could have the advantage.( O" i2 B c8 Z- C6 h
$ {, {; @, _- z+ a0 ]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.8 p+ N' T$ A6 I& v1 `
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Overall, there is a 3.5 times higher risk of such activity triggering a heart attack. 7 |4 n* L% p( j$ z; g2 h& x7 V & r: g. S/ I& E" @2 u VThe risk after ‘episodic’ sexual activity – the kind associated with affairs and one-night stands – is 2.7 times higher.2 r i4 z3 l* \6 ]3 C' y5 I5 X
6 s! {, D; {5 qBut 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 z+ y) V- P& d' b " v- }3 o% V" \4 P9 E" n( g5 }: TThe 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./ C6 ` `, T4 a8 n1 h; O
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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.+ i* i4 c5 q9 u4 E
8 E3 K0 j3 q& }( ]( WLike 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.4 K) ~- r3 z+ G$ Y
4 h- W+ H7 f0 T5 @The higher risk during activity is then offset by a lower ‘everyday’ background risk for people who are fitter because they are more active. 0 i% B- |: O9 Y2 f# O / L0 q0 L0 x' q! B; eAmy 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.2 j0 z( s ` n e! R' d
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'The study shows sex can act as a trigger, but this doesn’t change our viewpoint on the health benefits of physical activity.% {3 t4 D# j0 B
5 H& H3 P2 f, ?6 i7 ~5 j‘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.4 A5 x1 ]% U1 O) R$ Q5 n- @ }5 f
: C3 R! o. u# _. i8 r t'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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