More than 70 percent of the sodium in the U.S. diet comes from commercially processed or restaurant foods, a study in Circulation has confirmed. Another 14 percent is found naturally in foods. Only 5 percent of our sodium comes from salt we add to food at the table, while another 6 percent comes from that added during food preparation at home.
Thus, to cut down on sodium, it’s necessary to limit consumption of packaged foods and foods prepared outside the home, or at least to choose carefully by reading labels and menus (when nutrition information is provided). Just as important, the researchers concluded, is forfood manufacturers and restaurants to be encouraged to achieve FDA targets for reduced sodium levels in their foods.
Also see How to Shake the Salt Habit.