“开门七件事,柴、米、油、盐、酱、醋、茶”,其中,盐为“百味之首”,盐能提出各种原料中固有的鲜味,“咸则鲜”,已为不少人所推崇。其实不然,膳食过咸,盐过多不仅对健康无益,反而有害,这并非是危言耸听的。因此,世界卫生组织建议,每人每日食盐的摄入量不大于5克,然而,根据我国人民的饮食习惯,通常每天摄入的食盐为10～15克,显然是较高的,已远远超过生理需要。因此,营养学家建议,人们的饮食应淡些,再淡些。 食盐的主要化学成分是氯化钠,其中钠含量约为40％,钠与氯广泛存在于食物和饮水之中,与人体健康 “Open the door seven things, wood, rice, oil, salt, sauce, vinegar, tea”, of which the salt is “the first hundred”, salt can be made of all kinds of raw materials inherent flavor, “Xianzheng fresh” Respected by many people. In actual fact, the diet too salty, salt is not only good for health, but harmful, it is not alarmist. Therefore, the World Health Organization recommends that salt intake per person per day not more than 5 grams, however, according to our people’s eating habits, usually daily intake of salt is 10 to 15 grams, apparently higher, far Far beyond the physiological needs. Therefore, nutritionists suggest that people’s diet should be less, and then lighter. Salt is the main chemical composition of sodium chloride, which sodium content of about 40%, sodium and chlorine are widely present in food and drinking water, and human health