Salt: How Much Is Too Much?
The National Academies Institute of Medicine sets the recommended dietary intakes of all nutrients, including sodium. The daily adequate intake (DAI) of sodium is based on the amount needed by an average person who is good health.
According to the Dietary Guidelines for Americans 2015, certain groups of people should limit their sodium intake to less than 1,500 milligrams per day:
People with high blood pressure
People with kidney disease
Everyone over the age of fifty
All others should stay under 2,300 milligrams per day, which is not easy if you eat any processed foods at all, even some that are otherwise good for you.