PDF(Pubmed)
Abstract：
Potassium (K) is an essential mineral that is necessary for normal cell and membrane function and for maintaining both fluid balance and acid-base balance. Potassium is furthermore very important for normal excitation, for example in nerves and muscle. It is widely available in several food products, with the most important dietary sources being potatoes, fruits, vegetables, cereal and cereal products, milk and dairy products, and meat and meat products. Potassium deficiency and toxicity is rare in healthy people, but dietary potassium is associated with other health outcomes. Results from observational studies have shown that a potassium intake above 3500 mg/day (90 mmol/day) is associated with a reduced risk of stroke. Similarly, intervention studies provide evidence that this level of potassium intake has a beneficial effect on blood pressure, particularly among persons with hypertension and in persons with a high sodium intake (>4 g/day, equivalent to >10 g salt/day).
摘要：
钾（K）是正常细胞和膜功能以及维持流体平衡和酸碱平衡所必需的必需矿物质。此外，钾对正常激发非常重要，例如神经和肌肉。它在几种食品中广泛可用，最重要的食物来源是土豆，水果,蔬菜,谷物和谷物产品，牛奶和乳制品，肉和肉制品。缺钾和毒性在健康人中很少见，但是膳食钾与其他健康结果有关。观察性研究的结果表明，钾摄入量超过3500毫克/天（90毫摩尔/天）与中风风险降低有关。同样，干预研究提供的证据表明，这种水平的钾摄入量对血压有有益的影响，特别是在高血压患者和钠摄入量高的人中(>4克/天，相当于>10克盐/天)。
