香蕉对老年人来说是个好东西,一般人只知道它能通便,却很少有人知道它还有辅助降血压的功效。因为香蕉富含钾元素,一根香蕉约含400毫克钾。现代研究发现人体内的钾每增加一个浓度,就能抵消三个浓度盐的升血压作用,具体原因有两个,一是钾促进了盐的排泄,另一个原因是钾本身也有部分扩张血管的作用,所以饭后一根香蕉,便能事半功倍。对于控制血压的人来说,增加钾的摄入与限制盐的摄入,这两个方法的效果是相似的。长期摄入钾也可以减少降压药的 Bananas are a good thing for the elderly, most people only know that it can laxative, but few people know that it also has the effect of reducing blood pressure. Because bananas are rich in potassium, a banana contains about 400 milligrams of potassium. Modern studies have found that each increase in potassium concentration in the human body can counteract the hypotensive effects of salt at three concentrations for two specific reasons. One is that potassium promotes salt excretion, and the other is that potassium itself also partially dilates blood vessels Role, so a banana after a meal, they can do more with less. The effect of these two methods is similar for those who control blood pressure by increasing potassium intake and limiting salt intake. Long-term intake of potassium can also reduce antihypertensive drugs