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1.一项新的研究显示，想让心脏变得更健康，除了要减少饮食中钠的摄入之外，美国人还应该增加一种重要矿物质的摄入，这就是许多果蔬中都含有的钾元素。

A recent study showed that in order to maintain a healthy heart, Americans should not only consume less sodium in their daily diet, they also need to increase the intake of an important mineral, potassium, which exists in many fruits and vegetables.

2.钠是盐的重要成分，有迹象表明它会使血压升高，进而增加心脏病发作的风险，但至于高钠饮食是否真的会增加心脏相关疾病发作的风险，各种研究结果却是说法不一。

Sodium, a major component of salt, could cause high blood pressure which increases the risk of heart attack.  However study results still vary in terms of whether or not high sodium diet is definitely linked to heart related diseases.