Stress levels increased 18% for women and 24% for men from 1983 to 2009.

从1983年到2009年，女性和男性的压力水平分别上升了18%和24%。

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It is now believed that increased levels of stress, climate change and even artificial light at night may contribute to expanding waistlines.

人们现在认为，压力水平上升、气候变化、甚至连夜晚的人工照明都有助于扩大腰围。

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The levels of stress and testing duration increased during the subsequent iterations.

在后继的迭代中，压力的等级和测试持续时间增加了。

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The survey also showed that 91% of Americans believe that too much time away from home due to work has consequences, including 75% citing increased stress levels and a surprising 70% who say it can result in a failed marriage or relationship.

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Increased levels of stress hormones, such as cortisol, hurt the body's immune system.

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