感到不幸福吗？——多吃水果和蔬菜
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英国华威大学的一项研究表明多吃水果和蔬菜可以大幅提高人们的幸福水平。
该研究将发表在著名的《American Journal of Public Health》杂志上，这项研究是首次重大的科学尝试探索水果和蔬菜可以减少癌症和心脏病的发病风险。
每天摄入的水果和蔬菜额外增加到8份就会获得幸福感。
研究人员得出结论称，人们从几乎没有水果和蔬菜到每天八份水果和蔬菜会使人们的生活满意度增加，相当于人们从失业到就业的感觉。幸福感会在24个月内增加。
癌症
该研究随机调查了超过12000人。研究主题包括对他们的每日进食进行记录并对他们的心理健康进行测量。通过两年内饮食的改善，研究人员发现了人们心里的变化。
Andrew Oswald教授说：“相比改善人类健康水平，吃水果和蔬菜可明显提高我们的幸福感。人们吃健康食品的目的如防止癌症这一动机现已逐渐减弱。然而，增加水果和蔬菜的消费来改善幸福感会来的更直接点。”
英国华威大学和澳大利亚昆士兰大学之间通过合作发现，当水果和蔬菜每天额外增加到八份的时候幸福感就会增加。
西方饮食
该研究具有政策性影响意义，尤其是对发达国家中典型的不健康饮食的公民而言。卫生专业人员会用该研究结果劝说人们消费更多的水果和蔬菜。
昆士兰大学Redzo Mujcic博士研究员说：“相比传统的一些知识和信息，我们的研究结果对说服人们进行健康的饮食可能会更有效。从水果和蔬菜中人们可以获得精神愉悦感，而不只是要等几十年后才能获得的降低危害健康的风险。”
研究人员发现，水果和蔬菜摄入量的改变可以预测日后幸福度和生活满意度的改变。他们考虑了许多其它因素，包括人们的收入和生活环境变化的影响。
抗氧化剂
学者们认为可能最终这项研究与抗氧化剂相关，这表明乐观的态度和血液中类胡萝卜素之间存在关联。但是学者们认为这一领域还需要更进一步的研究确认。（生物谷Bioon.com）
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Eating more fruit and vegetables can substantially increase happiness levels
University of Warwick research indicates that eating more fruit and vegetables can substantially increase people's later happiness levels.
To be published shortly in the prestigious American Journal of Public Health, the study is one of the first major scientific attempts to explore psychological well-being beyond the traditional finding that fruit and vegetables can reduce risk of cancer and heart attacks. Happiness benefits were detected for each extra daily portion of fruit and vegetables up to 8 portions per day. The researchers concluded that people who changed from almost no fruit and veg to eight portions of fruit and veg a day would experience an increase in life satisfaction equivalent to moving from unemployment to employment. The well-being improvements occurred within 24 months.
Cancer
The study followed more than 12,000 randomly selected people. These subjects kept food diaries and had their psychological well-being measured. The authors found large positive psychological benefits within two years of an improved diet. Professor Andrew Oswald said: "Eating fruit and vegetables apparently boosts our happiness far more quickly than it improves human health. People's motivation to eat healthy food is weakened by the fact that physical-health benefits, such as protecting against cancer, accrue decades later. However, well-being improvements from increased consumption of fruit and vegetables are closer to immediate." The work is a collaboration between the University of Warwick, England and the University of Queensland, Australia. The researchers found that happiness increased incrementally for each extra daily portion of fruit and vegetables up to eight portions per day. The study involved an examination of longitudinal food diaries of 12,385 randomly sampled Australian adults over 2007, 2009, and 2013 in the Household, Income, and Labour Dynamics in Australia Survey. The authors adjusted the effects on incident changes in happiness and life satisfaction for people's changing incomes and personal circumstances.
Western diet
The study has policy implications, particularly in the developed world where the typical citizen eats an unhealthy diet. The findings could be used by health professionals to persuade people to consume more fruits and vegetables. Dr Redzo Mujcic, research fellow at the University of Queensland, said: "Perhaps our results will be more effective than traditional messages in convincing people to have a healthy diet. There is a psychological payoff now from fruit and vegetables—not just a lower health risk decades later." The authors found that alterations in fruit and vegetable intake were predictive of later alterations in happiness and satisfaction with life. They took into account many other influences, including changes in people's incomes and life circumstances. One part of the study examined information from the Australian Go for 2&5 Campaign. The campaign was run in some Australian states which have promoted the consumption of two portions of fruit and five portions of vegetables each day.
Antioxidants
The academics think it may be possible eventually to link this study to current research into antioxidants which suggests a connection between optimism and carotenoid in the blood. However they argue that further research is needed in this area.
