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Lecture 16 Minerals __ Vitamins_ and Bone Health

Lecture 16 Minerals __ Vitamins_ and Bone Health - Lecture...

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Lecture 16: Minerals (& Vitamins) and Bone Health 3/29/10 Functions of Bone Provides structure & support in body for organs (protects lungs, brain) muscles for movement Metabolic functions reservoir for minerals (calcium, phosphorus-for ATP, fluoride) that have essential metabolic functions most blood cells (RBCs, platelets) made in marrow of bones Bone Deforming Disease Rickets (in Children) legs are bent b/c bones are not strong enough to support body weight can be prevented by adequate calcium & vitamin B Osteoporosis weakened network of bone (not dense) Risk factors for Osteoporosis Modifiable Risk Factors: these are nutrition related! low body weight low Calcium intake low sun exposure (low vit D) history of amenorrhea in women with inadequate nutrition Nonmodifiable risk factors old age Race female history of fractures as adults Components of Bone 1. Bone mineral (mostly Ca & P) provides hardness 2. Bone matrix proteins (eg: collagen provides strength & flexibility ) 3. Cartilage 4. Blood vessels carry nutrients to and from bone (metabolic living tissue)
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