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Reducing sodium intake by any amount can lower blood pressure over the long term â and may benefit everyone, including people with normal blood pressure, new research shows.
While the link between consuming less-salty foods and lower blood pressure is well established, researchers wanted to understand the exact nature of the link over a range of daily sodium amounts, not simply the results of eating a high-salt versus low-salt diet.
After analyzing 85 studies that followed participants for up to three years, they found any reduction in sodium decreases both systolic blood pressure (the top number in a reading) and diastolic pressure (the bottom number). This trend was seen across a spectrum of daily sodium levels, with no evidence there was a bottom threshold in benefit.