Two new studies indicate that reducing sodium in pre-packaged and prepared foods could prevent thousands of cases of heart disease, stroke, and death. The studies were published in the journal Hypertension.
Key Findings from Studies
- France: Researchers estimated that modest reductions in bread's salt content could lower adults' daily salt intake by 0.35 grams, decrease blood pressure, and prevent over 1,100 deaths.
- United Kingdom: Researchers estimated that similar salt reductions in packaged foods and takeout meals could reduce daily British sodium intake by 17.5%, potentially preventing over 100,000 cases of heart disease and 25,000 cases of stroke over two decades.
Sodium Intake and Health Impacts
Sodium is essential for health functions, such as blood vessel water retention. However, approximately 90% of Americans consume excessive amounts, according to the American Heart Association (AHA).
High sodium intake increases the risk of high blood pressure, which is a risk factor for cardiovascular disease, long-term kidney disease, and cognitive decline.
In the United States, most sodium consumption originates from foods prepared outside the home or processed foods.
Dr. Daniel Jones, a professor at the University of Mississippi School of Medicine, noted that Americans typically get about 75% of their food from processed sources, including grocery store items, restaurants, and fast-food establishments.
Manufacturers often add salt to extend shelf life and enhance flavor. Minimal reductions in salt, which researchers suggest would not significantly impact taste, could have substantial health benefits.
American adults consume an average of 3,500 milligrams (mg) of sodium daily, exceeding the AHA-recommended limit of 2,300 mg. For individuals with high blood pressure, the daily limit is 1,500 mg, according to Dr. Latha Palaniappan of Stanford University School of Medicine.
Recommendations for Sodium Reduction
Experts advise that while completely avoiding processed foods may be challenging, reducing their consumption can lead to health improvements.
Dr. Jones recommends shopping primarily in the grocery store's periphery, where fresh foods are typically located.
Dr. Palaniappan suggests consuming natural whole foods.
"Eat foods with peels, not packages."
She also advises reading labels, exercising caution with packaged foods, and prioritizing fresh, minimally processed options.