Low-salt diets may not be beneficial for all, new study suggests.

Risks associated with low-sodium intake — less than three grams per day — are consistent regardless of a patient’s hypertension status.
Credit: © Sebastian Studio / Fotolia

A large worldwide study has found that, contrary to popular thought, low-salt diets may not be beneficial and may actually increase the risk of cardiovascular disease (CVD) and death compared to average salt consumption.

In fact, the study suggests that the only people who need to worry about reducing sodium in their diet are those with hypertension (high blood pressure) and have high salt consumption.

The study, involving more than 130,000 people from 49 countries, was led by investigators of the Population Health Research Institute (PHRI) of McMaster University and Hamilton Health Sciences.

They looked specifically at whether the relationship between sodium (salt) intake and death, heart disease and stroke differs in people with high blood pressure compared to those with normal blood pressure.

The researchers showed that regardless of whether people have high blood pressure, low-sodium intake is associated with more heart attacks, strokes, and deaths compared to average intake.

Previous studies have shown that low-sodium, compared to average sodium intake, is related to increased cardiovascular risk and mortality, even though low sodium intake is associated with lower blood pressure.

This new study shows that the risks associated with low-sodium intake — less than three grams per day — are consistent regardless of a patient’s hypertension status.

Further, the findings show that while there is a limit below which sodium intake may be unsafe, the harm associated with high sodium consumption appears to be confined to only those with hypertension.

Only about 10 per cent of the population in the global study had both hypertension and high sodium consumption (greater than 6 grams per day).

Now that you know, be guided by the prescription of your local doctor… Eat healthy.

Culled From Science Daily.

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