There is little cause for concern except for the unusual case of someone who eats exclusively locally grown foods year-round, a highly unlikely situation. Needs for the other five trace elements listed in the table are also likely to be met by eating a reasonably varied diet in amounts that meet energy needs. They serve many different functions in the body. Some additional trace elements are being studied as possible requirements for humans. New findings about them as well as about those listed above continue to be revealed.
Many questions remain to be answered.
For more information, or referral to qualified authorities, contact your Cooperative Extension county home economist. Remember These Important Points Diets consisting of a variety of choices from each of the four basic food groups can supply all the minerals you need and in adequate amounts. All trace minerals can be harmful in large amounts. If someone recommends that you take special supplements, be sure that person is a qualified health professional with training in nutrition. For further information and help with such questions, contact your Cooperative Extension county home economist.