Vitamin A - Deficiency Symptoms
Prolonged deficiency of vitamin A may result in inflammation of the eyes, poor vision, and nightblindness. There is an increased susceptibility to infections, especially of the respiratory tract, in the form of frequent and prolonged common colds. Vitamin A deficiency may lead to lack of appetite and vigour, defective teeth and gums, skin disorders such as acne, boils and premature wrinkles. When vitamin A is present in insufficient amounts, the mucous membranes of the nose, throat and mouth, the bronchial tubes, lungs, intestinal tract, kidneys and vagina are greatly affected. Eventually the mucous membranes of the entire body lose their ability to secrete the normal quantities of mucus needed to protect them from irritation, and the body degenerates rapidly. Other deficiency symptoms include retarded growth in children, dry and dull hair, dandruff, excessive hair loss, ridged nails, and a poor sense of taste and smell.
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