The decline in the intensity of light can lead to Seasonal Affective Disorder (SAD) and blue/green and full-spectrum light are used in phototherapy, an effective cure for winter depression.

光照密度减少可以导致季节性情绪障碍（Seasonal Affective Disorder），使用蓝绿光和全谱光线进行照射（光线疗法）可以有效的治疗冬季抑郁症。

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For people who suffer from winter depression 4 triggered largely by reduced sunlight, a bedside device that simulates the rising of the sun may provide relief, a study shows.

有一项研究表明，因为日照过短而患上冬季抑郁症的患者，可以借助一个模拟日出的床边装置来缓解病情。

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Even more people experience one or more symptoms of winter depression--such as overeating or oversleeping--even though their mood stays under control.

然而更多的人经历了一次或多次的冬季抑郁症状——譬如吃得过多或睡得过多——尽管他们的情绪处于控制之中。

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In the winter of 2006, he fell victim to depression and checked into hospital, the aftermath of which left him "like a blank sheet of paper, " he told Danish paper Politiken at the time.

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Many people also recognize that their moods and energies mutate with the seasons, with the most typical pattern being increased well-being and energy in spring and summer and more tiredness and depression during the gray days of winter.

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