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当前心血管系统的疾病防治和研究受到普遍关心和重视。这是由于该系统的疾病构成了对人类生命和健康主要威胁。自五十年代起,国外陆续发表了饮水硬度与某些心血管疾病死亡率之间关系的研究报道。至1972年有9个国家20余篇论文报道了心血管疾病死亡率与水质硬度之间呈负相关的联系。美国曾进行过三次全国性调查,英国进行过两次全国调查,两国得出相同结果:高血压心脏病、动
The current cardiovascular disease prevention and research are generally concerned about and attention. This is because the system’s disease poses a major threat to human life and health. Since the 1950s, foreign countries have successively published research reports on the relationship between drinking water hardness and mortality of some cardiovascular diseases. By 1972, more than 20 papers from nine countries reported a negative association between cardiovascular mortality and water hardness. Three nationwide surveys have been conducted in the United States, two national surveys conducted in the United Kingdom and the two countries reached the same result: Hypertensive heart disease,