Sodium is found in many foods, including salt, which is made up of sodium chloride. Both table salt and sea salt contain around 40% sodium by weight.

Kosher salt is made solely from sodium chloride and doesn’t usually contain additives or iodine. It’s less dense than table salt, and often used in cooking because the larger grains are easy ...

Sea salt is mostly composed of sodium chloride, a compound that helps regulate fluid balance and blood pressure in the body. ... It’s not because it contains less sodium than table salt.