Our bodies need it, and growing children do especially. It makes our hair nice and shiny and keeps our skin moist so it isn't dry and cracked. We also eat it in certain foods, but only in animal foods. It will never be in any food that grows in the ground. Experts say that kids and adults should limit themselves to 300 milligrams of cholesterol a day.
Sodium is a mineral.
The body needs it to maintain a balance of fluids, so that we have enough water inside and outside and to make our heart and muscles work appropriately. Parents are never encouraged to put their children on a low-sodium diet. As a point of interest, instant products, or more highly processed foods in general, are higher in sodium. Overall, sodium is one of the less worrisome nutrients to consider when making food choices. It is not even a source of calories.