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publicado em 07/04/2013 às 13h50:00
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Reducing salt and increasing potassium are new targets of WHO

Review of dozens of studies have shown that these two actions can people save millions from heart disease

 
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Poster salt reduction in supermarket. Material is part of the campaign launched by Health Secretary Estudal
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Poster salt reduction in supermarket. Material is part of the campaign launched by Health Secretary Estudal

Reduce salt intake with parallel increase potassium levels can save millions of people from heart disease and stroke.

According to those responsible for an extensive review of studies conducted by the World Health Organization (WHO), there is much evidence that lowering salt intake reduces blood pressure and thus the risk of stroke and heart disease but very little is known about the potential benefits of increased potassium intake, despite numerous studies already associate the low level of potassium in the body with high blood pressure.

The WHO set a global goal of reducing dietary salt intake to 5-6 grams (about one teaspoon) per person per day by 2025. In the UK the target is half the recommended by WHO, about 3 grams per day by 2025, for the adult population.

The results of reviews of studies show that rates in the UK are the most suitable. The researchers believe that the current WHO recommendations are not ideal and say a further reduction to 3 grams per day should become a long-term goal for the salt intake of the population. "

The first study examined the effects of salt reduction on blood pressure, hormones and blood fats (lipids) from 34 studies involving more than 3,000 adults.

It was found that a modest reduction of salt for four or more weeks led to significant decreases in blood pressure in persons with high blood pressure and even normal. The effect was observed in whites and blacks and men and women, thus reducing strokes, heart attacks and heart failure among populations.

Similar results were found in a second analysis of 56 studies, including 37 high-quality reporting blood pressure, blood lipids, catecholamine levels (kidney function). It was found that the reduced salt intake lowers blood pressure and has no adverse effect on blood lipids, hormone levels or renal function.

The lower sodium intake was also associated with a reduced risk of fatal coronary heart disease and stroke in adults. "The totality of evidence suggests that lowering sodium intake should be part of public health efforts to reduce blood pressure and cardiovascular disease, and will probably benefit most individuals," the authors conclude.

A third study analyzed data on potassium intake and health of 33 studies involving more than 128,000 healthy participants. The results show that increasing the potassium intake lowers blood pressure in adults, without adverse effects on blood lipids, hormone levels or renal function. Greater potassium intake was associated with a 24% lower risk of stroke in adults and may also have a beneficial effect on blood pressure in children. Potassium is found in fruits fresher, vegetables and legumes.

Source: Isaude.net
   Palavras-chave:   World Health Day    Hypertension    Heart disease    Reducing salt    Salt    Increasing potassium    Potassium    WHO   
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