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A new research suggests that for the health of heart, Americans need not only to reduce the intake of sodium, but also to increase the intake of an important mineral, which is potassium contained in many fruits and vegetibles.

Even though evidences indicate that sodium, an important component of table salt, could increase blood pressure, which leads to higher risk of heart attack, research results do not agree on whether high-sodium diets do in fact increase the risk of heart attack.