Hypervitaminosis A (Vitamin A Toxicity)
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Vitamin A is classified in Fat Soluble Vitamins. It comes in from various sources. It is also a very strong antioxidant. All Fat Soluble Vitamins are stored in our body. Excessive intake of Vitamin A can lead to toxicity because the Vitamin A is stored. It has been reported in children where parents have been overzealous in supplementing the vitamins. Eskimos refrain from eating the liver of polar bear due to its high Vitamin A content.
Symptoms of toxicity include:
- Peeling of skin
- Some of these signs are due to increased intracranial tension.
- Sometimes swelling over long bones (bony exostosis) may occur with painful bones.
- Enlargement of liver is also seen in children.
- Higher concentration of retinol increases lysosomal enzymes, leading to cellular death.
- Hypercarotenemia can result from persistent excessive consumption of foods rich in carotenoids.
- The skin becomes yellow, but no staining of sclera as in jaundice is observed.