After knowing about Macronutrients
and its role, let’s see about Micronutrients.
Micronutrients are nutrients
required by organisms in minuscule quantities to orchestrate a range of
physiological functions and essential for proper growth and development.
Though
the requirements of the micronutrients (of the body) are very tiny (milli and
microgram) amounts but, the consequences of their absence are severe. (The
deficiency of micronutrient leads to disease and disorders) Body can’t
synthesize the micronutrients (like the macronutrients) must be supplied
through the diet.
Micronutrients include all the
essential minerals and vitamins phytochemicals, and antioxidant. In contrast to
macronutrients, micronutrients are not directly used for making energy, but they
work together with enzymes and other substances, in the process of energy production,
(metabolism) digesting nutrients, building macromolecules, etc.
Minerals :
Dietary
minerals are the chemical elements required by living organisms. There are sixteen essential minerals, found in
ionized form in the body. They are further classified into Major or macro minerals
{=>100 milligrams per day} and Trace or micro minerals {< 100 milligrams/
day}.
Minerals are critical for enzyme
function, others are used to maintain fluid balance, build bone tissue,
synthesize hormones, transmit nerve impulses, contract and relax muscles, and
protect against harmful free radicals.
Minerals are very important in keeping the blood and
tissue fluids from either becoming too acid or too alkaline, or aid in transporting nutrients to the cells. Also, they are your
electrolytes, carrying electrical currents through the body.
Calcium,
phosphorus, magnesium, sodium, potassium, chloride and sulfur are known
as major or macro minerals.
Iron, manganese, copper,
iodine, zinc, fluoride, selenium, chromium and molybdenum are known as trace or
micro minerals.
Vitamins: There are thirteen essential vitamins
are required to our body to function. Vitamins are either fat-soluble or
water-soluble. Fat soluble Vitamins can be stored in the fatty tissues in the
body when in excess. But, water soluble vitamins excreted in urine when in
excess and so need to be taken daily.
The water-soluble vitamins are vitamin C and all the B
vitamins, which include thiamine, riboflavin, niacin, pantothenic acid,
pyroxidine, biotin, folate and cobalamin. Fat soluble vitamins are Vitamin A,
D, E and K.
Vitamins are required to carry out many functions in the body
like, making red blood cells, synthesizing bone tissue, and playing a role in vision
and nervous function and immune system. Deficiency of vitamin can cause severe
health problems. Certain vitamins like C or E are also acting as Antioxidants.
Antioxidants are a substance (from plant and animal
sources) that inhibits or slows the damage done to our cells by oxidation. (Free
radicals)
Phytochemicals are
chemical compounds found in plants. Hundreds of these phytochemical compounds
are considered micronutrients because they are needed by our body for good
health.
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