Cutting sodium below current recommendations could be counterproductive, research finds. For people with heart failure, restricting dietary sodium intake to levels below the standard recommended maximum of about 2.3 grams per day does not bring additional benefits and may increase the risk of dea
According to a new meta-analysis presented at the American College of Cardiology’s Annual Scientific Session Together With the World Congress of Cardiology, individuals suffering from heart failure may not receive any additional benefits from limiting their dietary sodium intake below the recommended maximum level of approximately 2.3 grams per day. In fact, the analysis of nine randomized controlled trials suggests that such restriction may even raise the risk of death.
“Our findings showed that restricting dietary sodium to less than the usual recommendation was counterproductive in the management of heart failure,” said Anirudh Palicherla, MD, an internal medicine resident at Creighton University School of Medicine in Omaha, Nebraska, and the study’s lead author. “This was in line with a recent randomized controlled trial suggesting that restricting sodium more than what we do now doesn’t necessarily lead to better outcomes.
In the study, researchers analyzed nine randomized controlled trials that assessed different levels of sodium restriction for people with heart failure and included data on rates of death and hospitalization. Most of the studies were conducted between 2008-2022, except for one earlier study published in 1991. Together the trials enrolled nearly 3,500 heart failure patients in total.
“Limiting sodium is still the way to go to help manage heart failure, but the amount of restriction has been up for debate,” Palicherla said. “This study shows that the focus should be on establishing a safe level of sodium consumption instead of overly restricting sodium.”
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