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EC number: 215-185-5 | CAS number: 1310-73-2
Twenty-nine studies of normotensive subjects and 30 studies of hypertensive subjects were identified and reviewed. Studies of normotensive subjects tended to be shortterm studies with less than 1 month of intervention. Only 3 long-term studies of normotensive subjects (lasting more than 1 year) were identified. The subjects in the studies of normotensive people were generally younger (mean age 26 years) than those in the studies of hypertensive people (mean age 47 years). Trials with hypertensive subjects had longer intervention periods, and 5 long-term studies were identified. Apart from the meta-analysis, 19 additional studies were evaluated.
-Restriction of salt intake for normotensive people is not recommended at present because of insufficient evidence of hypertension (grade B recommendation)
-To avoid excessive intake of salt people should be counselled to choose foods low in salt (e.g., pre-prepared foods), to refrain from adding salt at the table and minimize the amount of salt used in cooking, and to increase their awareness of the salt content of food choices in restaurants (grade D recommendations)
-It is recommended that the salt consumption of hypertensive patients be determined by interview (grade D recommendation)
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