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Eating less salt may not lower your BP, says study

New delhi: Contrary to popular belief, consuming less sodium may not lead to lower blood pressure in the long term, show results of a new study that followed more than 2,600 men and women for 16 years.

“We saw no evidence that a diet lower in sodium had any long-term beneficial effects on blood pressure,” said Lynn Moore, Associate Professor of Medicine at Boston University School of Medicine in the US.

The new findings, presented at the Experimental Biology 2017 meeting, being held in Chicago from April 22-26, call into question the sodium limits recommended by the current Dietary Guidelines for Americans.

“Our findings add to growing evidence that current recommendations for sodium intake may be misguided,” Moore added.

The 2015-2020 Dietary Guidelines for Americans recommend limiting sodium intake to 2,300 milligrams a day for healthy people.

For the study, the researchers followed 2,632 men and women ages 30 to 64 years old who were part of the Framingham Offspring Study.

The participants had normal blood pressure at the start of the study.

However, over the next 16 years, the researchers found that the study participants who consumed less than 2,500 milligrams of sodium a day had higher blood pressure than participants who consumed higher amounts of sodium.

The researchers also found that people in the study who had higher intakes of potassium, calcium and magnesium exhibited lower blood pressure over the long term.

Moore said that there is likely a subset of people sensitive to salt who would benefit from lowering sodium intake, but more research is needed to develop easier methods to screen for salt sensitivity and to determine appropriate guidelines for intakes of sodium and potassium in this salt-sensitive group of people.

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