Manganese is a micro-mineral, with the atomic number of 25, that is involved in the synthesis of protein like
substances, bones and cartilage. An enzyme
superoxide dismutase (SOD) contains manganese and this enzyme protects the body
against free radicals.
Manganese is necessary for a healthy functioning nervous system. It is also necessary for the production of feminine hormones, the normal structure of the bones. brain function, the formation of thyroxin (thyroid gland hormone), the synthesis of structural proteins in the body and the metabolism of glucose and is a useful mineral for athletes.
The human body contains 30 to
35mg. of manganese, widely distributed throughout the tissues. It is found in
the liver, pancreas, kidney and pituitary glands. This mineral helps nourish the
nerves and brain and aids in the coordination of nerve impulses and muscular
actions. It helps eliminate fatigue and reduces nervous irritability.
Manganese is also important for regulating blood sugar so is useful for
A deficiency in this mineral may cause bone disorders, diabetes, dizziness, confused thinking and poor memory, heart
conditions, mental and physical tiredness, nausea or vomiting, nervous excitability, poor elasticity in the muscles, poor hair and nail condition and skin rashes. Prolonged deficiency can result in anaemia, blindness or paralysis in infants, convulsions and seizures, hearing loss, infertility, rheumatic arthritis, stunted growth and bone deformities.
Harmful quantities are rare, but can lead to apathy, involuntary movements,
attitude problems and coma. It can also cause the same symptoms as Parkinson's disease.
Highest sources of manganese in milligrams per 100 grams
NOTE: Manganese is concentrated in the outer covering of nuts, in the green leaves of edible plants and green vegetables such as peas and runner beans.
Recommended daily requirement
No official daily allowance of manganese has
been established, but 2.5 to 7 mg is generally accepted to be
the average adult requirement.
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