NEW YORK — Some sub sandwiches, movie theater pretzels and even milkshakes and salads will soon come with a first-of-its-kind salt warning symbol in New York City after officials agreed Wednesday to stake out new ground in a national push for healthier eating habits.

The city Board of Health voted unanimously to require chain eateries to put salt-shaker emblems on menus to denote dishes with more than the recommended daily limit of 2,300 milligrams of sodium. That's about a teaspoon.

Applauded by public health advocates but slammed as misguided by salt producers and restaurateurs, the plan is a first in the U.S. and furthers a series of novel nutritional efforts in the biggest city.

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