The salt advice is only half the story

You've heard "eat less salt" your whole life. But blood pressure isn't governed by sodium alone — it's governed by the balance between sodium and its quiet partner, potassium. The two minerals act like a seesaw at the level of your cells and kidneys: sodium pulls water into your bloodstream and raises pressure, while potassium helps your kidneys flush excess sodium out and relaxes blood vessel walls.

Here's the catch most people miss: large studies suggest the sodium-to-potassium ratio predicts cardiovascular risk better than sodium intake by itself. Modern diets deliver a double hit — lots of sodium from ultra-processed foods, and very little potassium because we eat few vegetables, fruits, beans, and tubers. Our ancestors had the ratio flipped: potassium-rich and sodium-poor.

That means you have two levers, not one. Cutting the salt shaker helps, but so does actively adding potassium-rich whole foods — a baked potato, beans, spinach, yogurt, or a banana. Raising potassium can blunt sodium's pressure-raising effect even when sodium stays constant. (One important caveat: people with kidney disease or on certain medications must not load up on potassium without medical guidance — the kidneys are what keep it in balance.)