USA Center for Disease Control: Application of Lower Sodium Intake Recommendations for Adults, 1999-2006 study

In 2005-2006, an estimated 29% of U.S. adults had hypertension (i.e., high blood pressure), and another 28% had prehypertension. The estimated average intake of sodium for those in the United States over 2 years old was 3,436 mg/day while the U.S. Department of Health and Human Services and U.S. Department of Agriculture recommended adults should consume no more than 2,300 mg/day of sodium (equal to approximately 1 tsp of salt), but those in specific groups (i.e., all persons with hypertension, all middle-aged and older adults, and all blacks) should consume no more than 1,500 mg/day of sodium (69% of U.S. adults should consume no more than !,500 mg/day). There is substantial evidence linking greater sodium intake to higher blood pressure.

Sodium reduction is recommended for persons with hypertension and as a first line of intervention for persons with prehypertension. Public health actions to reduce sodium intake likely will include reducing the sodium content of processed foods; encouraging consumption of more low-sodium foods, such as fruits and vegetables; and providing more relevant information about sodium in food labeling.

The current daily percentage value for sodium in the nutrition facts panel of packaged foods is based on a previous federal guideline of 2,400 mg/day and is likely to mislead the majority of consumers, for whom the 1,500 mg/day limit is applicable.

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