Sodium is an essential mineral your body needs to regulate fluid balance, transmit nerve signals, and contract muscles. But in the modern diet, we consume far too much of it — with serious consequences for cardiovascular health. The average American consumes about 3,400 mg of sodium per day, more than double the American Heart Association's recommended limit of 1,500 mg.
Where Does All the Sodium Come From?
Contrary to popular belief, the majority of dietary sodium doesn't come from the saltshaker at the table. Over 70% of consumed sodium is hidden in processed and restaurant foods. The biggest culprits include bread and rolls (the number one source), pizza, sandwiches, cold cuts and cured meats, soups, burritos and tacos, and savory snacks like chips and crackers.
How Sodium Raises Blood Pressure
When you eat too much sodium, your kidneys struggle to excrete the excess. Water follows sodium into your bloodstream, increasing blood volume. Greater blood volume means your heart has to pump harder, which raises blood pressure. Chronically elevated blood pressure (hypertension) damages arteries over time, setting the stage for heart attacks, strokes, and kidney disease.
Salt Sensitivity Varies by Individual
Not everyone responds to sodium the same way. About 50–75% of people with hypertension are "salt sensitive," meaning their blood pressure rises significantly in response to salt intake. Older adults, African Americans, people with diabetes, and those with chronic kidney disease tend to be more salt-sensitive. Regardless of sensitivity, most people benefit from reducing sodium intake.
Practical Reduction Strategies
Cook more at home using fresh ingredients. When buying packaged foods, choose the "low sodium" or "no added salt" version. Rinse canned beans and vegetables under water to remove excess sodium. Use herbs, spices, citrus, and vinegar to add flavor without salt. Read labels: a food with less than 140 mg per serving is considered low sodium. Gradual reduction allows your palate to adjust without feeling deprived.