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What is Hypervitaminosis of which of the following wil cause bony abnormalities: 
(A) Vit. A
(B) Vit. D
(C) Vit C
(D) Vit. E
(E) Vit. K and explain in detail?
"Vit D excess increase intestinal calcium absorption & if severe ,also increase bone resorption 7 " - H17th/2387 “Vit.
A intoxication cause hypercalcemia & presumed to increase bone resorption Q - H17th/2387 Metabolic Bone Disease Q The common metabolic bone disease is associated
in varying degree with depletion of bone tissue or bone mineral & [in some cases) with systemic features of altered mineral metabolism The most common condition
fall into three groups: 1. Osteoporosis-in which the quantity of bone mass' 3 is abnormally low 2. Osteomalacia- in which the osseous connective tissue [osteoid) is present but
insufficiently mineralised' 3 3. Osteitis fibrosa- in which PTH overproduction leads to bone resorption 13 & replacement by fibrous tissue