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為何樂(lè)觀者更健康長(zhǎng)壽?

放大字體  縮小字體 發(fā)布日期:2008-05-30
核心提示:Studies suggest optimists live longer and enjoy better health than pessimists. The real mystery is why. Among the findings of various studies: Highy optimistic people have significantly lower death rates. Optimistic coronary bypass patients are half


Studies suggest optimists live longer and enjoy better health than pessimists. The real mystery is why.

Among the findings of various studies:

Highy optimistic people have significantly lower death rates. Optimistic coronary bypass patients are half as likely as pessimists to require re-hospitalization.

People with positive emotions have lower blood pressure. The most pessimistic men are more than twice as likely to develop heart disease compared with the most optimistic.

But is it optimism that makes people healthy, or do healthy people understandably have a brighter outlook?

To get a better handle on things, scientists have adjusted their analyses in recent years to account for pre-existing medical conditions. Studies that made these adjustments found that existing illnesses don't negate the benefits of optimism, according to the May 2008 issue of Harvard Men’s Health Watch.

In one example of how humans keep their spirits up no matter what, researchers found older people suffering various illnesses still said they thought they were aging well. Another study found that the sick and disabled don't wallow in misery as is commonly believed.

Optimism, another study found, triggers activity in the same brain area that is known to malfunction among the depressed.

But why is optimism so beneficial?

Perhaps optimists enjoy better health and longer lives because they lead healthier lifestyles, build stronger social support networks, and get better medical care, the Health Watch article suggested.

Also, stress is known to kill, releasing hormones that cause deterioration of everything from your gums to your heart. Optimists might have lower levels of stress hormones.

Heredity could play a role, too. It is possible that genes predispose some people to optimism, and that the same genes affect health and longevity.

More study is needed, the Health Watch article contends, because it's likely that multiple mechanisms are involved.
多項(xiàng)研究表明,樂(lè)觀者比悲觀者更健康長(zhǎng)壽。可其中的原因卻一直是個(gè)謎。

各項(xiàng)研究結(jié)果顯示:

十分樂(lè)觀的人死亡率明顯較低。在接受過(guò)心臟搭橋手術(shù)的病人中,樂(lè)觀的病人再次入院的幾率為悲觀者的一半。

情緒樂(lè)觀的人血壓相對(duì)較低。最悲觀的人患心臟病的幾率為最樂(lè)觀者的兩倍多。

可問(wèn)題在于,究竟是樂(lè)觀讓人健康還是健康的人更加樂(lè)觀?

為了弄清這一問(wèn)題,近年來(lái)科學(xué)家們調(diào)整了研究方法以解釋現(xiàn)有疾病(對(duì)樂(lè)觀情緒的影響)。據(jù)今年5月號(hào)的《哈佛男性健康觀察》,經(jīng)調(diào)整后的研究發(fā)現(xiàn),現(xiàn)有的各種病癥不會(huì)影響樂(lè)觀情緒的積極作用。

其中一項(xiàng)研究對(duì)人們?cè)谌魏吻闆r下如何保持樂(lè)觀情緒的問(wèn)題進(jìn)行了探究,研究人員發(fā)現(xiàn)一些受多種疾病困擾的老年人仍然覺(jué)得自己過(guò)得很好。另一項(xiàng)研究發(fā)現(xiàn),病殘人士并不像人們通常想像的那樣郁郁寡歡。

還有研究發(fā)現(xiàn),樂(lè)觀能刺激抑郁人士腦部功能紊亂區(qū)域的活動(dòng)。

但為什么樂(lè)觀如此有效呢?

這篇在《哈佛男性健康觀察》上發(fā)表的文章稱,樂(lè)觀者更健康長(zhǎng)壽也許是因?yàn)樗麄兊纳罘绞礁】担鐣?huì)支持網(wǎng)絡(luò)更有力,得到的醫(yī)療護(hù)理更好。

此外,大家都知道,壓力具有很強(qiáng)的“殺傷力”,它能釋放出讓你從牙齦到心臟全身各個(gè)器官都衰竭的激素,而樂(lè)觀者體內(nèi)的壓力激素水平則相對(duì)較低。

另外,遺傳可能也是原因之一。可能基因會(huì)讓一些人天生樂(lè)觀,同時(shí)這些基因又會(huì)影響健康和壽命。

該文章指出,(完全解釋這一現(xiàn)象)還需進(jìn)行更多研究,因?yàn)檫@一現(xiàn)象可能涉及多種原理。


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關(guān)鍵詞: 樂(lè)觀者 健康 長(zhǎng)壽
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