Lecture 32 Protein_Calcium - Lecture 32 Protein and Calcium...

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Lecture 32 Protein and Calcium
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0 10 20 30 40 50 60 70 Caucasian 5-year Survival Rates 1974-76 1983-85 1995-2001 Health Disparities
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1.Does not increase athletic performance 2.Associated with increased risk of cancer. 3.Associated with osteoporosis. Perils of Protein Consuming protein: ?
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Calcium Paradox US has highest Calcium consumption in world Also have highest rates of osteoporosis
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Calcium Paradox Africa has lowest Calcium consumption in world Has lowest rates of osteoporosis
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One resolution of Calcium Paradox Protein Consumption Urinary Calcium Loss
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Why? 1.Eating protein results in increased blood amino acids 2.Increased amino acids makes blood acidic 3.Bicarbonate buffers blood acidity 4.Bicarbonate is released from bone 5.Calcium is released with bicarbonate 6.Ca also necessary for removing amino groups from kidney
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. Sellmeyer D E et al. Am J Clin Nutr 2001;73:118-122 ©2001 by American Society for Nutrition
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osteoblasts osteocasts - + Remodeling
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osteoblasts osteocasts - +
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osteoblasts osteocasts - +
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Bone Calcium 20-25 45-50 males females Age 0 menopause Breaking point
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Normal Osteoporosis
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Long Term Consequence of Losing Calcium from bone is: Osteoporosis
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Why remodeling?
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This note was uploaded on 12/18/2011 for the course NS 1150 taught by Professor Levitsky during the Fall '05 term at Cornell University (Engineering School).

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Lecture 32 Protein_Calcium - Lecture 32 Protein and Calcium...

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