As with calorie counts at our favorite burger joint, New Yorkers will no longer be blissfully unaware of the sodium content of their meals at chain restaurants in the city. This morning, the Board of Health unanimously voted in a measure to add warning labels to dishes exceeding 2,300 milligrams of sodium. Beginning December 1st, the dishes will bear an icon of a salt shaker inside of a triangle similar to warning labels on the highway.

The CDC recommends a limit of 2,300 milligrams (about one teaspoon) of salt per day, a figure far exceeded by many commercial food items. According to some studies, the average American eats about 3,300 mg of sodium a day, which the CDC says can contribute to heart disease, stroke and other vascular diseases.

"New York City was the first jurisdiction in the nation to adopt high sodium label warnings, and the Health Department expects this rule will further improve the overall health of New Yorkers," the Health Department said in a statement. "With a simple menu icon and statement to alert restaurant customers which items have exceedingly high sodium, New Yorkers will have easily accessible information that can affect their health."

The sodium icons are part of the Mayor's ambitious OneNYC plan, which seeks to improve NYC's position on fighting climate change and economic inequality, as well as "reduce premature mortality by 25 percent by 2040." For now, that means letting everyone know about the 2,980 milligrams of sodium in a foot-long spicy Italian sub from Subway, whether that really means anything at all.