Iron
Iron
is a trace mineral that is essential for formation of hemoglobin, the substance
that carries oxygen to cells throughout the body. Iron is found in meat,
poultry, and fish. Another form of iron that is not as well absorbed as the
form in animal foods is found in whole or enriched grains, green leafy
vegetables, dried beans and peas, and dried fruits. Consuming a food rich in
vitamin C, such as orange juice, at the same time as an iron-containing plant food
will enhance iron absorption from the food. Iron deficiency eventually leads to
anemia, with insufficient oxygen reaching the brain. The anemia can cause
fatigue and impair mental functioning. Iron deficiency during the first two
years of life can lead to permanent brain damage.
Magnesium
The
mineral magnesium is found in green leafy vegetables, whole grains, nuts,
seeds, and bananas. In areas with hard water, the water may provide a significant
amount of magnesium. In addition to its involvement in bone structure,
magnesium aids in the transmission of nerve impulses. Magnesium deficiency can
cause restlessness, nervousness, muscular twitching, and unsteadiness. Acute
magnesium deficiency can progress to apathy , delirium, convulsions, coma, and
death
Manganese
Manganese
is a trace mineral found in whole grains and nuts, and to a lesser extent,
fruits and vegetables. Manganese is involved in carbohydrate metabolism and
brain functioning. Although very rare, manganese deficiency can cause
abnormalities in brain function.
Copper
The
richest sources of the trace mineral copper in the diet are organ meats,
seafood, nuts, seeds, whole grain breads and cereals, and chocolate. In addition
to other functions, copper is involved in iron metabolism in the body and in
brain function. Deficiency of copper causes anemia, with inadequate oxygen
delivery to the brain and other organs. Copper deficiency also impairs brain functioning
and immune system response, including changes in certain chemical receptors in the
brain and lowered levels of neurotransmitters.
Zinc
The
trace mineral zinc is found in red meats, liver, eggs, dairy products,
vegetables, and some sea
foods. Among other functions, zinc is involved in maintaining cell membranes
and protecting cells from damage. Zinc deficiency can cause neurological
impairment, influencing appetite,
taste, smell, and vision. It has also been associated with apathy,
irritability and fatigue.

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