病从口来膳食不当最麻烦 大凡有过比较的人都知道，北方人口重，吃东西咸，盐放得太多。这是一种生活习惯。北方无霜期短，蔬菜供应远不如江南，由冬到夏，有将近半年的时间靠萝卜、土豆、大白菜当家。蔬菜的供应量少，价格自然就贵，平民百姓不可能大量消费青菜，只能多放点盐 Illness from the mouth to the most troublesome meal improper In general, people who have been compared have known that the northern population, eating salty, salt too much. This is a living habit. North frost-free period is short, far less than the supply of vegetables Jiangnan, from winter to summer, nearly six months time by radish, potatoes, cabbage headed. The supply of vegetables is small, the price is naturally expensive, ordinary people can not consume large quantities of vegetables, only more salt