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冬季易患季节性情感精神病
日期:2004-01-29  作者:  浏览量:5019 
             (星火,摘自ABCnews网 – 2004年1月20日报道)

  美国ABC新闻网报道:5%的美国人冬季易患季节性情感精神病——即抑郁的一种形式。主要的症状是睡眠和饮食习惯的改变,持续的焦虑感和对日常活动失去了兴趣。此外,还表现为喜欢吃甜食或者淀粉类食物,体重增加,疲劳以及易激惹和注意力集中困难。这些症状在冬季白天最短的时间里比较明显,春、夏则逐步缓解。临床发现,这与褪黑激素水平高有关系,因此,光线疗法是一种有效的治疗方法。


  Jan. 20 — While most people simply grumble about the cold weather and shortened days of winter, the season can mean a case of the blues for one in four Americans.
Worse yet, 5 percent of the U.S. population suffers from a serious depression during the winter known as seasonal affective disorder (SAD).

  Some symptoms of SAD are changes in sleeping and eating habits, a persistent blue or anxious mood, and a loss of pleasure from activities, according to the National Mental Health Association.
Other symptoms might include cravings for sweet or starchy foods, weight gain, fatigue, irritability and difficulty concentrating, reports the American Academy of Family Physicians. These symptoms will generally occur in the fall and winter months and subside during the spring and summer.

  Symptoms are usually at their worst during January and February, when the days are shortest.

  Young adults and women are at the highest risk for developing the disorder, and it is more common in Northern areas of the world.
While researchers have yet to pinpoint the exact cause of SAD, they believe that increasing levels of the sleep-related hormone melatonin may be at the root of the disorder. The more time a person spends in the dark, the higher the melatonin levels.

  That may be why light therapy is one of the most effective treatments for people with SAD. Natural light is best, and if you can spend an hour outdoors on winter days, you will probably see an improvement in your mood, according to the mental health association.

  For those suffering severe symptoms, phototherapy — sitting in front of a light box that emits very bright light — may be helpful.

 

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