The research found that the people who are most at risk are
those who get too much salt but also get too little potassium. They
were twice as likely to die from a heart attack as those who ate
about the same amount of both nutrients.

Sodium increases the risk of high blood pressure, a major cause
of heart disease and stroke. One of the researchers says potassium
may neutralize the heart-damaging effects of salt.

Many foods have potassium. Good sources are spinach, bananas,
broccoli and prunes.

The study was led by researchers at the Centers for Disease
Control and Prevention. It was published in Monday's Archives of
Internal Medicine.