How Much Sodium Per Day with High Blood Pressure

What sodium limit do guidelines recommend for high blood pressure?

The 2017 ACC/AHA hypertension guideline recommends that adults with high blood pressure consume no more than 2,300 mg of sodium per day, and notes that further reductions toward 1,500 mg per day are associated with greater blood pressure reductions, particularly in people with established hypertension 1Ref 1Whelton PK, Carey RM, Aronow WS, et al. (2018).2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults.Sodium intake recommendations (2,300 mg/day, with further benefit at 1,500 mg/day for hypertension), DASH diet for blood pressure, potassium intake, and lifestyle modifications as core hypertension management.

To put this in perspective, 2,300 mg is roughly equivalent to one teaspoon of table salt. Most American adults consume well above this level — largely because of sodium in processed and restaurant foods rather than home cooking.

The relationship between sodium and blood pressure is not uniform: some people are more "salt sensitive" than others, meaning their blood pressure responds more dramatically to sodium intake. Salt sensitivity is more common in older adults, African Americans, people with diabetes, and those with chronic kidney disease.

Where does most of our sodium actually come from?

This is the key insight: the sodium shaker on the table is a minor contributor. The overwhelming majority of dietary sodium comes from processed and packaged foods 2Ref 2Centers for Disease Control and Prevention (2014).Prevalence of Excess Sodium Intake in the United States — NHANES, 2009–2012.Over 75% of dietary sodium comes from packaged and restaurant foods; only ~11% from salt added during cooking — the key point that label-reading is more effective than removing the salt shaker:

• Processed and packaged foods — bread, canned soups and beans, deli meats, cheese, chips, crackers, condiments, and frozen meals.
• Restaurant and fast food — portion sizes and sodium content in restaurant meals are often extremely high.
• Cured and preserved meats — bacon, sausage, hot dogs, jerky.

Reading Nutrition Facts labels is the most direct strategy. The sodium content appears as milligrams per serving — checking it routinely across multiple foods adds up quickly. Foods labeled "low sodium" contain 140 mg or less per serving.

How much does reducing sodium actually lower blood pressure?

Sodium reduction is one of the most reliably effective non-drug interventions for blood pressure. The magnitude varies by individual, but reducing sodium intake significantly reduces systolic blood pressure in most people with hypertension 1Ref 1Whelton PK, Carey RM, Aronow WS, et al. (2018).2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults.Sodium intake recommendations (2,300 mg/day, with further benefit at 1,500 mg/day for hypertension), DASH diet for blood pressure, potassium intake, and lifestyle modifications as core hypertension management.

The DASH (Dietary Approaches to Stop Hypertension) diet, which emphasizes fruits, vegetables, whole grains, low-fat dairy, and lean proteins while limiting sodium, saturated fat, and added sugars, is one of the most studied dietary patterns for blood pressure control 1Ref 1Whelton PK, Carey RM, Aronow WS, et al. (2018).2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults.Sodium intake recommendations (2,300 mg/day, with further benefit at 1,500 mg/day for hypertension), DASH diet for blood pressure, potassium intake, and lifestyle modifications as core hypertension management. Combining sodium reduction with the full DASH pattern produces greater blood pressure reductions than either approach alone.

For some people, dietary changes are sufficient to bring blood pressure into a safe range without medication. For others, they allow medication doses to be reduced. Either outcome is meaningful.

Practical strategies to reduce sodium without sacrificing taste

Cutting sodium does not mean flavorless food. Approaches that work:

• Cook at home more often — restaurant meals are a major sodium source, and home cooking gives you full control.
• Use herbs, spices, citrus, and vinegar to add flavor without salt.
• Choose "no added salt" or "low sodium" canned goods — rinsing canned beans and vegetables further reduces sodium content.
• Compare labels when buying packaged foods — sodium content varies widely within the same food category.
• Ask restaurants to reduce salt or serve sauces on the side — many will accommodate the request.
• Reduce gradually — taste buds adapt over several weeks, and food that initially seems bland becomes more satisfying as palate sensitivity increases.

Does potassium intake matter too?

Yes. Potassium and sodium work in opposition in the body — higher potassium intake is associated with lower blood pressure, independent of sodium 1Ref 1Whelton PK, Carey RM, Aronow WS, et al. (2018).2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults.Sodium intake recommendations (2,300 mg/day, with further benefit at 1,500 mg/day for hypertension), DASH diet for blood pressure, potassium intake, and lifestyle modifications as core hypertension management. Foods rich in potassium include fruits (bananas, oranges, cantaloupe), vegetables (potatoes, leafy greens, tomatoes), legumes, and low-fat dairy.

The DASH diet's blood pressure benefit is partly attributable to its higher potassium, magnesium, and calcium content. Increasing potassium-rich whole foods while simultaneously reducing processed sodium is a particularly effective combined strategy. The FDA recommends that most adults aim for 4,700 mg of potassium per day 3Ref 3U.S. Department of Agriculture and U.S. Department of Health and Human Services (2020).Dietary Guidelines for Americans, 2020–2025.Sodium limit of 2,300 mg/day for adults; potassium is a nutrient of concern that is under-consumed; higher potassium intake is associated with lower blood pressure and may counteract high sodium effects.