Like water, carbohydrates, protein, and fats, vitamins and
minerals are essential to life. They are therefore considered nutrients, and are often
referred to as micronutrients simply because they are needed in relatively small
amounts compared with the four basic nutrients.
Because vitamins and minerals are so necessary for health,
the U.S. Food and Drug Administration (FDA) has formulated recommended consumption levels
for vitamins called recommended daily allowances (RDAs). But these allowances do not
account for the amount needed to maintain maximum health rather than borderline health,
only the amount needed to prevent deficiency diseases. Therefore, the average adult who is
not suffering from any specific disorder should obtain more than the RDAs of vitamins and
minerals from food sources and/or from supplements. A table
is provided that shows the guidelines for the intake of vitamin,
mineral supplements, and other supplements for healthy living. Although the
amounts listed are safe (they will not cause toxicity), they should be varied according to
size and weight. People who are active and exercise; those who are under great stress, on
restricted diets, or mentally or physically ill; women who take oral contraceptives; those
on medication; those who are recovering from surgery; and smokers and those who consume
alcoholic beverages all need higher than normal amounts of nutrients.
In addition to a proper diet, exercise and a positive
attitude are two important elements that are needed to prevent sickness and disease. If
your lifestyle includes each of these, you will feel good and have more energy,
something we
all deserve.