Elinder C G, Jonsson L, Sternström T, Piscator M, Linnman L
Arch Environ Health. 1980 Mar-Apr;35(2):81-4.
The hardness of drinking water (i.e., the sum of calcium and magnesium concentrations) has been related to cadmium concentration in kidney cortex and to microscopic signs of arteriosclerosis and focal myocardial fibrosis in 50 Swedish horses slaughtered for meat production. A significant negative correlation was found between water hardness and cadmium concentrations in kidney cortex. This indicates that horses living in soft water areas are more inclined to accumulate cadmium from the general environment. Microscopic changes in the aorta and myocardium were approximately 2 times as frequent in horses that drank soft water compared to horses that drank hard water. The differences were, however, not statistically significant. It is concluded that horses are well suited for studies of the "water factor".
对50匹为肉类生产而屠宰的瑞典马进行研究发现，饮用水硬度（即钙和镁浓度之和）与肾皮质中的镉浓度以及动脉硬化和局灶性心肌纤维化的微观迹象有关。结果发现，水硬度与肾皮质中的镉浓度之间存在显著的负相关。这表明生活在软水地区的马更倾向于从一般环境中积累镉。饮用软水的马主动脉和心肌的微观变化频率大约是饮用硬水的马的2倍。然而，这些差异在统计学上并不显著。得出的结论是，马非常适合用于“水因素”的研究。
