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6克 世界卫生组织的研究人员提出了每人每天6克盐的上限，每天4～6克的食盐摄入量是健康的饮食之道。全世界分别有50％和40％以上的男性和女性每天钠摄入量超过6克的临界值。而食盐的摄入量过多，易导致血容量增加。对血管壁的侧压力增加，从而导致血压增高，还会引起血管硬化。研究人员推荐“餐时加盐”的饮食方法。在烹饪时可不加盐，起锅装盘端在桌上后再加盐。此时盐只附于菜肴的表面而来不及渗入内部，但吃起来咸味不减，却可减少将近一半的用盐量。
Six grams of WHO researchers have proposed an upper limit of 6 grams of salt per person per day, and 4 to 6 grams of salt per day is a healthy diet. Men and women in the world each have a threshold of more than 6 grams of sodium daily for 50% and 40%, respectively. The salt intake too much, easily lead to increased blood volume. Side pressure on the vessel wall increases, resulting in increased blood pressure, but also cause hardening of the arteries. Researchers recommend “mealtime salt” diet. Do not add salt during cooking, cook the dish end and add salt to the table. At this time the salt is attached to the surface of the dishes and can not penetrate into the interior, but the taste will not diminish, but can reduce the salt consumption by nearly half.