Myth: To eat less sodium, avoid salty-tasting foods and use sea salt in place of table salt.

Reality: Your sense of taste doesn't always notice sodium, and sea salt or other gourmet salts aren't healthier than table salt.

"Just because it doesn't taste salty doesn't mean that it isn't salty," Rosenbloom says. She says many processed foods contain a lot of sodium -- check the label.

Sea salt, Rosenbloom says, contains slightly less sodium per teaspoon than table salt only because sea salt is coarser, so fewer grains fit into the teaspoon.