NEW YORK (CNNMoney) -- Subway sandwiches just got a little less saltier.
The restaurant chain announced Monday it has reduced sodium levels in its sandwiches by 15% across the board, while its Fresh Fit sandwich line gets an even steeper 28% reduction.
The sodium reduction is the result of changes to the bread used, while modifications to meat allow for additional savings.
The lower sodium levels are the result of a research and development process that has been underway since 2007, and Subway said it will result in 450 fewer tons of sodium in the American diet.
"Sodium" is, of course, a naughty word. Especially in the United States, where Americans eat too much of it, and high-blood pressure is a widespread health problem.
"We are trying to be a little more responsible with the sodium levels," said Lanette Kovachi, the chain's corporate dietician.
Shanon Trueman, a food science analyst at research and advisory firm Nerac, said it makes sense that Subway lead the way on sodium reduction -- especially given the emphasis they place on health in marketing campaigns.
It is a smart financial move as well, Trueman said.
"People are looking favorably on a food producer that is looking to help people be healthy," she said.
Kovachi said that Subway -- the world's largest sandwich purveyor with 34,443 stores -- has already lowered sodium levels in several overseas markets, including New Zealand and Australia. The changes were well received by customers -- and there is no noticeable difference in taste, she said.
Some of the chain's most popular sandwiches are in for a big reduction. For example, the 6-inch ham sandwich will drop from 1260 mg of sodium in 2009 to 830 mg today.
For comparison, a McDonald's Big Mac checks in at 1040 mg of sodium.
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