There are many reasons for deficiency of nutrition, ranging from poor diet to certain disease conditions. Some of the common causes include:
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Poor dietary habits
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Impaired absorption of nutrients
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Disease conditions which reduces appetite and absorption of nutrients
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Intake of certain drugs, such as:
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Antibiotics such as tetracycline and sulpha-drugs
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Anticonvulsants
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Antipsychotic drugs
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Corticosteroids
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Long term use of mineral oil
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Bariatric surgery
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Pancreatic disorders
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Bile duct blockage
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Overcooking of food
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Throwing away water used to cook vegetables
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Using too much oil – fat-soluble vitamin will get ‘washed-away’ with the oil