what is vitamin? write it type and deficiency deases and symptoms?define the terms.
Answers
Answer:
Explanation:
A vitamin is an organic molecule that is an essential micronutrient which an organism needs in small quantities for the proper functioning of its metabolism. Essential nutrients cannot be synthesized in the organism, either at all or not in sufficient quantities, and therefore must be obtained through the diet.
Vitamin A
It is an important micronutrient that is obtained from different food sources such as carrots, spinach, milk, egg, liver and fish. It is required for normal vision, reproduction, growth and healthy immune system of an individual.
Most of the children below five years of age suffer from xerophthalmia, a serious eye disorder, in which the child is at risk of becoming blind. Vitamin A deficiency in a pregnant woman can lead to complications during pregnancy and childbirth.
Vitamin B
Vitamin B can be of different types, such as Vitamin B1, B2, B12 etc. The deficiency diseases depend on the type of Vitamin B that a person is lacking.
Vitamin B1: Deficiency of vitamin B1 causes beriberi, that results in weak muscles and severe weight loss. Acute deficiency can lead to paralysis and cardiac failure.
Vitamin B6: Lack of vitamin B6 causes deficiency diseases such as anaemia and certain skin disorders such as cracks around the mouth. It can also lead to depression and nervous breakdowns.
Vitamin B12: Lack of vitamin B12 causes pernicious anaemia. Other diseases related to B12 deficiency are muscle and nerve paralysis, extreme fatigue, dementia and depression.
Vitamin C
Deficiency of vitamin C can cause scurvy, a disease that is characterised by bleeding gums, skin spots and swelling in joints. It also affects the immune system and can even be fatal in acute conditions.
Vitamin D
Vitamin D deficiency causes rickets, which leads to weakening of bones, especially near the joints. It can also lead to the decaying of teeth.
Vitamin K
Vitamin K is an important blood coagulating nutrient. Its deficiency is common in infants and leads to excessive bleeding due to the inability to form blood clots.
Answer:Vitamin deficiency is the condition of a long-term lack of a vitamin. When caused by not enough vitamin intake it is classified as a primary deficiency, whereas when due to an underlying disorder such as malabsorption it is called a secondary deficiency. An underlying disorder may be metabolic – as in a genetic defect for converting tryptophan to niacin – or from lifestyle choices that increase vitamin needs, such as smoking or drinking alcohol.[1] Governments guidelines on vitamin deficiencies advise certain intakes for healthy people, with specific values for women, men, babies, the elderly, and during pregnancy or breastfeeding.[2][3][4][5] Many countries have mandated vitamin food fortification programs to prevent commonly occurring vitamin deficiencies
Explanation: