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关于饮水硬度与CVD(心血管病)死亡率的关系,过去20年进行了大量的流行病学调查,很多报告反复说明饮水地区的CVD死亡率高于硬水区,CVD发病率与水硬度有明显的负相关。对于水中什么物质预防或引起CVD的发生,曾有过种种的推测。曾有人认为Ca、Mg以及微量金属中Cr、Li和V是对心血管具有保护性的物质,而Cd和Pb则是不利因素。但也有报告水的硬度与CVD的发病呈正相关或无相关的,经过20年的研究还没有得出一个关于水中那些因素是引起或防止CVD的肯定结论。马是寿命相当长,并且可发生动脉硬化和其他心血管病的动物,马有明显的蓄积Cd的倾向,因为作者认为研究马饮水的硬度与其CVD的病理变化以及Cd在肾中的蓄积程度的关系是有意义的。用马进行研究可以提供一些特殊的资料,因为马与人不同,它的饮水来
Regarding the relationship between drinking water hardness and CVD mortality, a large number of epidemiological investigations have been conducted over the past two decades. Many reports repeatedly indicate that CVD mortality in drinking-water areas is higher than in hard-water areas, and the incidence of CVD and water hardness are significant The negative correlation. There have been speculations about what substances in water prevent or trigger CVD. It has been suggested that Ca, Mg, and trace metals Cr, Li and V are substances that are protective of the cardiovascular system, while Cd and Pb are unfavorable factors. However, there is also a report that the hardness of water is positively or not correlated with the incidence of CVD. After two decades of research, no conclusion has been reached as to whether those factors in water cause or prevent CVD. Horse is a long life, and can occur in atherosclerosis and other cardiovascular diseases, horses have a clear tendency to accumulate Cd, because the authors believe that the horse’s drinking water hardness and CVD pathological changes and accumulation of Cd in the kidney The relationship is meaningful. Studying with horses can provide some special information because horses differ from each other in that they drink water