Retinol, the dietary form of vitamin A, is a fat-soluble, antioxidant vitamin important in vision and bone growth. It belongs to the family of chemical compounds known as retinoids. Retinol is ingested in a precursor form; animal sources (milk and eggs) contain retinyl esters, whereas plants (carrots, spinach) contain carotenoids. Tissue cells convert these precursors to retinol, and then to either retinal or retinoic acid. ...

Bone diseases affect the development and structure of bone. They include: *Bone cyst*Bone spur (Osteophytes)*Craniosynostosis *Fibrous dysplasia*Bone tumor*Giant cell tumor of bone*Hypophosphatasia *Osteoporosis*Primary hyperparathyroidism *Klippel-Feil syndrome *Osteitis Condensans Ilii *Osteochondritis Dissecans*Osteochondroma (Bone Tumor)*Osteosarcoma (Bone Tumor)*Osteomyelitis *Osteopenia *Renal Osteodystrophy*Osteomalacia

Vitamin A (Retinol) as related to Bone Diseases