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老年抑郁症的患病率从上世纪末以来,由于医疗进步、营养与卫生的改善以及体育运动的发展,人类的估计寿命数字不断提高,目前已高达70～80岁。正因如此,65岁以上者在发达国家人口总数的比例已经不可避免地增加而且继续上升。据统计,到2000年,这些国家中65岁以上人口要达到全人口的25%。另据世界卫生组织估计抑郁症的患病率则占全世界人口的3～5%。老年人患抑郁症的原因尽管高龄是人生的自然发展阶段,但是在这个时期中发生躯体与精神疾病的频率增
The prevalence of senile depression Since the end of the last century, the estimated life expectancy of mankind has been on the rise as a result of advances in medical care, nutrition and sanitation, and the development of sports. At present, it has reached the age of 70 to 80 years. It is precisely for this reason that the proportion of people over the age of 65 in developed countries has inevitably increased and continues to rise. It is estimated that by the year 2000, 25% of the total population will be 65 years or older in these countries. According to the World Health Organization, the prevalence of depression is estimated to be 3 to 5% of the world’s population. Causes of Depression in the Elderly Although aging is a natural stage of life, the frequency of somatic and mental illness during this period increases