WHO流行病学调查第一阶段技术报告.doc

The industrialization process of women of childbearing age youth occupational environment on reproductive health effects in the epidemiology Technical report of first stage 1) Introduction According to WHO’s prediction, in the 21 Century, infertility will be the second only to tumors and cardiovascular disease in the first three major diseases.The average incidence rate around the world is 7% ~ 46%. Despite differences in different regions, the present acceptable incidence in research field is 8% ~ 15%. In China, the incidence rate of infertility is relatively low before 1970s, but it begun to rise from early 1980s. Entering the 21st century, it shows clear ascendant trend, reaching as high as 8%-10% and even more than 15% in some regions. The decline of reproductive capacity has become an important problem facing the rapid development of economic construction currently. It is proved by medical reports that infertility patients is increasing, and the number in urban areas is higher than that in rural areas. In highly-industrialized and densely-populated cities, the number of infertility is the highest. According to a large number of documents, the most influential acquired factor lies in the environment that we live by. The higher the region is industrialized, the higher the patients of infertility are. Environment, particularly the production environment, affects peoples reproductive capacity. At present, over 100 chemicals which mankind has a close contact with have been proved to have such effect. Nowadays, mankind activities, professional production activities in particular, can not continue without these chemical materials. These materials in human body, mainly plays an estrogenic effect (estrogen), directly affecting men and womens reproductive capacity. Other physical and chemical factors in workplaces effecting reproductive capacity should also be concerned now. But a comprehensive research on occupational factors is rare. Occupational analysis shows that