Sodium chloride. Sodium is an essential dietary ingredient. Daily sodium requirements can be met by the amount normally present in food. Substantial extra salt is used in traditional methods of food preparation, and modern food processing methods add even more, so diets often contain 10 g/day or more. This contributes to hypertension and may have other harmful effects. National dietary guidelines typically recommend keeping mean daily salt intake below 6 g, i.e., about 2.4 g sodium/day. A “salt-free diet” is really a salt-restricted diet, e.g., as used in medical regimens to treat hypertension and congestive heart failure.
Subjects: Arts and Humanities — Medicine and Health.