Sodium
Helps nerves, muscles and fluid balance. Excess intake can increase fluid retention and blood pressure, especially in salt-sensitive people.
1,500 mg/dayAHA optimal goal for most adults
American Heart Association guidance ↗Evidence guideReviewed Aug 2026
Sodium · potassium · pressure
The pressure you carry adds up.
Sodium is essential, but consistently high intake can raise blood pressure. Potassium-rich foods can help the body excrete sodium and support blood-vessel function. The balance matters—and so does the amount of time your arteries spend under excess pressure.
Use SodiumCheck to compare options, not diagnose a condition.Personal targets and medication decisions belong with a qualified clinician.
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Two minerals, one useful signal
Look at the whole day, not one number in isolation.
Potassium
Supports normal muscle and nerve function, helps relax vessel walls and encourages sodium excretion. Food sources include beans, potatoes, greens, yogurt and fruit.
Kidney disease and some medicines can make extra potassium unsafe. Ask a clinician before using potassium supplements or potassium-based salt substitutes.
AHA potassium primer ↗The ratio
SodiumCheck divides milligrams of sodium by milligrams of potassium. A lower value generally means less sodium relative to potassium.
Lower is betterUseful for comparing similar foods
There is no universally accepted clinical cutoff for a single meal. Treat the ratio as a directional comparison—not a diagnosis or a substitute for total sodium.
Sodium, potassium and cardiovascular risk ↗02
Blood pressure targets
“Treatment goal” and “optimal lifetime level” are not the same idea.
Optimal target110 / 70A practical low-normal prevention benchmark—not a medication target
Normal<120 and <80Aim to preserve this range
Elevated120–129 and <80The lower half of the older “prehypertension” range
Stage 1 hypertension130–139 or 80–89The upper half of the older “prehypertension” range
Stage 2 hypertension≥140 or ≥90Clinical treatment is usually needed
≈25MU.S. adults with elevated pressure9.8% · about 1 in 10 · 2017–18 estimate
≈123MU.S. adults with hypertension47.7% · nearly 1 in 2 · 2021–23 estimate
“Prehypertension” is an older label for 120–139 systolic or 80–89 diastolic. Current U.S. guidance splits that range into elevated pressure and Stage 1 hypertension, so there is no current standalone “prehypertension” count. Hypertension prevalence includes adults taking blood-pressure medication.
Why 120/80 is a threshold, not an optimum
Under the 2025 ACC/AHA categories, 120 systolic is elevated and 80 diastolic is Stage 1 hypertension; an exact 120/80 reading is not “normal.” A practical optimal target for prevention is 110/70 in a healthy adult who feels well, although blood pressure naturally varies from reading to reading. Cardiovascular risk rises continuously rather than suddenly at 120, and long-term exposure matters: CARDIA data link greater cumulative pressure in young adulthood with later heart failure, coronary disease and stroke.
A naturally occurring reading below that range is not automatically a problem, but symptoms such as dizziness, weakness or fainting matter. For medication, “lower” is not automatically safer. Treatment targets must account for age, falls, kidney function, diabetes, pregnancy, symptoms and how the pressure was measured.
What intensive treatment research means
In SPRINT, selected high-risk adults without diabetes who were treated toward systolic pressure below 120 had fewer cardiovascular events and deaths than those treated toward below 140. Intensive treatment also produced more hypotension, electrolyte abnormalities and acute kidney injury. It supports careful, individualized treatment—not self-adjusting medication to chase the lowest reading.
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What reduces sodium’s impact
Stack several modest interventions instead of looking for one antidote.
Choose a lower-sodium order
Compare the same kind of meal across restaurants. Sauces, dressings, breads, cheese and cured proteins are common sodium multipliers.
Build a DASH-style pattern
Center vegetables, fruit, beans, whole grains, nuts and lower-fat dairy. The randomized DASH-Sodium trial found that the combination lowered pressure more than either strategy alone.
Increase potassium through food
Beans, lentils, leafy greens, potatoes, tomatoes, yogurt and fruit improve the overall dietary pattern while shifting the sodium-to-potassium balance.
Use swaps carefully
Rinse canned foods, request sauce on the side and replace some table salt with herbs, acid or—when medically appropriate—a potassium-enriched salt substitute.
Address the other pressure levers
Regular aerobic and resistance activity, healthy weight, limited alcohol, no smoking, adequate sleep and treatment for sleep apnea all matter.
Measure and treat consistently
Use a validated upper-arm cuff, sit quietly for five minutes and average repeated readings. Take prescribed medicine consistently and review home trends with your clinician.
Put the guide to work
Explore the food database →Compare the order before it becomes the habit.
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Research shelf
Guidelines for context; trials and cohorts for the underlying evidence.
Guideline · 2025ACC/AHA prevention, detection and management of high blood pressure↗Randomized trial · 2001DASH diet plus reduced sodium and blood pressure↗Randomized trial · 2015SPRINT intensive versus standard blood-pressure control↗Cluster trial · 2021Potassium-enriched salt substitution, stroke and cardiovascular events↗Cohort analysis · 202224-hour urinary sodium, potassium and cardiovascular risk↗Potassium meta-analysis · 2025Dose-response evidence from randomized potassium trials↗Potassium review · 2013Higher potassium intake, blood pressure and cardiovascular outcomes↗Hibiscus meta-analysis · 2022Hibiscus and blood pressure across 13 randomized trials↗Hibiscus tea RCT · 2010Brewed hibiscus tea in adults with elevated or mild hypertension↗Taurine meta-analysis · 2025Taurine and cardiometabolic risk factors across 34 randomized trials↗Taurine RCT · 2016Taurine, ambulatory blood pressure and vascular function↗CARDIA cohort · 2021Cumulative blood pressure and later cardiovascular disease↗