DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Vitamin D supplements. Patient taking a vitamin D3 (cholecalciferol) supplement. Vitamin D is found in foods such as oily fish, milk, liver and egg yolk. It is necessary for the absorption of calcium and phosphorous in the gut. Deficiencies in vitamin D lead to rickets (improper bone formation) in children, and osteomalacia (bone softening) and osteoporosis (brittle bone disease) in adults.
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