Paleolithic diet
"Typical adult Americans consume nearly 4000 mg of sodium each day (Food & Nutrition Board, 1989) of which fully 75% is added to food during processing... In the United States recommended dietary allowances for sodium are 500±2400 mg/d... and for potassium 2000±3400mg/d (Food & Nutrition Board, 1989). These recommendations are roughly intermediate between current and ancestral human experience".