Table salt is usually fortified with iodine, a practice that's been around since the early 20th century.

Sea salt may retain some other minerals depending on the water source - but generally not enough to make a difference in your diet.

"Sea salt does have a small amount of trace minerals, but it's really too small to offer much benefit," Rumsey said. "We get those minerals in other forms from our food."

One thing sea salt doesn't have is added iodine, which you'll often see noted on its label. Table salt has been fortified with iodine since the early 20th century as a way to get more of the essential mineral into Americans' diets. These days, Rumsey said, most Americans get plenty of iodine in their diets — so you shouldn't worry about using sea salt instead if you like its texture and crunch.

The most important thing to remember: Sea salt is still salt, and you shouldn't consume too much of it.

"I tell people that whatever salt you do decide to use, to do so sparingly," Rumsey said — and that goes for the sodium content in packaged foods, too. Aim for less than 2300 mg, or less than 1500 mg if you are over age 51 or have health concerns such as high blood pressure, diabetes or kidney disease.

在过去几年里，你也许会在杂货店中发现这样一种趋势，越来越多食品加工商在产品包装袋印上了“添加海盐”的标识。从有机全麦椒盐卷到什锦坚果，再到美国熟食奶酪产品。

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