"How Low Should You Go? Experts Debate Latest Salvo in the War on Sodium"
Medscape May 16 
http://www.medscape.com/viewarticle/804286
" . . . AHA stating that Americans should aim for 1500 mg of sodium daily. The 2010 Dietary Guidelines for Americans recommends a daily sodium intake of 2300 mg for the general population and 1500 mg for individuals 51 years of age and older, African Americans, or individuals with hypertension, diabetes, or chronic kidney disease. . . "