Minerals Minerals are inorganic substances aiding in the formation of teeth and bones, red blood cells and cell membranes. A well-balanced diet should provide most of the necessary minerals. Mineral supplements are rarely needed, except in cases of dietary deficiencies. Water Essential to all forms of life is water, the most common chemical in the human body. Water provides the medium in which all metabolic reactions take place and regulates body temperature.
Water is obtained from drinking liquids and eating foods.
The kidneys maintain a balance between fluid intake and output to ensure proper functioning of metabolic processes. Although not listed as one of the six basic nutrients, fiber is an essential part of a healthy diet. Fiber is an indigestible nonstarch polysaccharide found in plants. High-fiber diets, which include plenty of fruit, raw vegetables, grains and cereals, provide bulk and help maintain proper intestinal function. Nutritional standards and food guides Nutritional standards have been established by most developed countries, helping to create general nutrition guidelines for good health.