This group includes iron, copper, fluorine, iodine, selenium, zinc, chromium, cobalt, manganese and molybdenum. Major elements are minerals that are needed in large quantities. This group includes calcium, potassium, sodium, magnesium, phosphorus, chloride and sulfur. Water makes up about 50 to 60 percent of the body's weight. Every cell in the body must have water in order to survive.
Experts recommend that people drink eight to ten glasses of water a day.
The Guidelines Eat a variety of foods. No single food provides all the nutrients people need. Eating a variety of foods increases the chances of getting all the vitamins, minerals and other nutrients needed for good health. Balance food intake with some physical activity in order to maintain a healthy weight. Combining exercise with healthy eating helps people lose or maintain weight and stay healthy.