A new Harvard study linked the overuse of salt to more than 2 million cardiovascular deaths worldwide in 2010.

Researchers found one out of every 10 die from eating too much salt.

In America, bread and cheese are top sources for sodium.

"For the average person, it's very hard to avoid salt - you have to be incredibly motivated, incredibly educated, have access to a range of foods and do all the cooking yourself," Dr. Dariush Mozaffarian, a Harvard School of Public Health epidemiologist, told ABC News.

The Salt Institute says the study is misleading because no country in the world consumes the low level of salt that's recommended.

Researchers say they hope the study will push policy makers to set lower sodium limits in prepared foods.

Currently, The Center for Disease Control and Prevention recommends a consumption level of no more than 1,500 milligrams of salt per day.