People report more gastrointestinal bloating when they eat a diet high in salt, a study has found.
Researchers at the Johns Hopkins Bloomberg School of Public Health in the US re-analysed data from a large clinical trial conducted two decades ago, and found that high sodium intake increased bloating among trial participants.
"Bloating is one of the leading gastrointestinal complaints in the US and can be exacerbated in some people by a high-fiber diet. Our results suggest that they might be able to reduce that bloating, without compromising on healthy fiber, by lowering their sodium intake," said Noel Mueller, senior author of the study.
Bloating is estimated to affect up to a third of US adults overall, and more than 90 per cent of those with irritable bowel syndrome, according to the study.
Bloating features a buildup of excess gas in the gut. The production of gas can be attributed to gas-producing gut bacteria breaking down fiber. There is also some evidence that sodium can stimulate bloating.
The study, published in the American Journal of Gastroenterology, is the first to examine sodium as a cause of bloating in the context of low- and high-fiber diets.
The study analysed data from the DASH-Sodium trial, conducted
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