1973年,日本人的日均盐(不是钠)摄入量是14.5克,2017年降为9.5克

According to the National Nutrition Survey (NNS), which was renamed to the National Health and Nutrition Survey (NHNS) in 2013, the daily salt intake has steadily decreased from 14.5 g in 1973 to 9.5 g in 2017 

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