The Standard American Diet (SAD) has it all wrong when it comes to sodium and potassium.
The typical daily intake of sodium in the U.S. is about 3400 mg.
The AI (Adequate Intake) is 1500/day. The Tolerable Upper level (UL) is 2300 mg.
The AI for potassium is 4700 mg/day, a level that will lower blood pressure and reduce the effects of sodium on blood pressure. The problem: Few Americans currently consume these amounts of potassium. The sodium/potassium ratio should be 1:2, but actually approaches the opposite of about 2:1, so you can easily see the problem.
The U.S diet is high in sodium and low in potassium. The reason is that we eat a lot of processed foods, generally high in sodium and low in potassium and added during processing and manufacturing. About 77% of the sodium we eat comes from these sources and not due to the salt shaker.