Manganese

Essential for

energy production
the action of the antioxidant enzyme, superoxide dismutase
protein metabolism, bone formation
a healthy nervous system

Absorption and metabolism

Only 3 to 5 per cent of dietary manganese is absorbed.

Deficiency

Manganese deficiency is rare. Marginal deficiency may play a role in osteoporosis and diabetes.

Sources

Good sources of manganese include nuts, whole grains, dark green leafy vegetables and tea. The manganese content of food varies with the location in which the food is grown. The table on page 280 can be used as a guide.

Daily recommended dietary intakes

A safe and adequate daily intake is estimated to be around 2 to 5 mg.

Toxic effects of excess intake

Toxic effects from oral manganese are rare.

Interactions

High intakes of calcium, phosphorus, magnesium, iron, copper and zinc may inhibit manganese absorption.

Therapeutic uses of supplements

Manganese supplements have been used to treat inflammatory conditions, fatigue, mental disorders, epilepsy and diabetes.

Manganese
Manganese health
Manganese deficiency
Manganese sources
Manganese overdose
Manganese supplements
Manganese interactions

Other Minerals:

Boron
Calcium
Chromium
Cobalt
Copper
Electrolytes
Potassium
Sodium
Chloride
Fluoride
Iodine
Magnesium
Manganese
Molybdenum
Nickel
Phosphorus
Selenium
Silicon
Sulfur
Vanadium
Zinc