MAGNESIUM::
It is an important constituent of soft tissues and bones source of magnesium are green vegetables meat bread etc it is required for normal functioning of muscles and nervous tissues It also participates in formation of bone and is the component of many coenzymes
Zinc ::
It is the constituent of a vital enzyme carbonic anhydrase Carbonic anhydrase plays key role in acid base balances and also maintenance of intraocular pressure in eys it is also essential for some enzymes like dehydrogenases and carboxypeptidase it is found in traces in all types of food daily requirement is about 12 mg Deficiency of zinc may cause retardation of growth alopecia skin lesions etc
Fluorine :::
It is found in bones teeth and other tissues it is found in traces in food and water Drinking water must contain atleast 1-2 parts per million (ppm) Fluoride appears to improve tooth structures and inhibits formation of carious teeth with cavities
Manganese ::
It is required in traces it activates several enzymes and is needed for haemoglobin synthesis urea formation growth reproduction and lactation Ordinary mixed diet contains about 2 mg which is enough to meet with the daily requirement
Cobalt ::
It is a component of vit B12 and hence essential for heamoglobin formation deficiency or excess of cobalt is usually not noticed
Chromium ::
It is found in high concentration in Brewer s yeast wine and some brands of beer it is necessary for the proper utilization of dietary sugars and other carbohydrates by optimizing the production and effects of insulin chromium helps in increasing blood levels of high density lipoproteins and decreasing the levels of low density lipoproteins
Selenium ::
it is an antioxidant element it prevents chromosome breakage and may assume a role in preventing certain birth defects
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