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Raw fruits and vegetables may be better for your mental health than cooked ones, according to a new study from the University of Otago in New Zealand. The study, published in Frontiers in Psychology, found that people who ate more uncooked produce had lower levels of symptoms related to depression and other mental illnesses, compared to those who ate more cooked, canned, or processed varieties. 新西兰奥塔哥大学的一项新研究表明：生的水果和蔬菜或许比煮熟的水果和蔬菜更有益于心理健康。这篇研究发表在Frontiers in Psychology期刊上，研究发现：与那些经常吃煮熟的、罐装或处理过的农产品的人相比，经常吃生的农产品的人患抑郁症和其它心理疾病的风险更低。 The study was only able to show an association between raw produce and better mental health, not a cause-and-effect relationship. But the researchers say the link could have to do with the fact that many fruits and vegetables have more nutrients in their natural state-and that those nutrients may have a positive impact on mood and brain chemistry. 这项研究只能表明生的农产品和更佳的心理健康之间存在联系，却不能证明是因果关系。但研究员表示，这种联系可能与这一事实相关：很多水果和蔬菜在其自然状态下有更多的营养成分--而这些营养成分可能对心情和大脑有积极作用。 For the study, researchers surveyed more than 400 young adults, ages 18 to 25, in the United States and New Zealand. People in this age group tend to consume a relatively low level of fruits and vegetables, the authors point out, and are also at high risk for mental health disorders. | 
