HPED 2507 Lecture Notes - Lecture 13: Bone Density, Osteoporosis, Electrolyte
8 Feb 2020
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Minerals: elements and cannot be created or destroyed (can leach out of foods, consist of single atoms, carry a charge, electrolytes, acid-base balance, dri indicated daily recommendations. Functions: bones and teeth (99%, muscle and nerve contractions, blood clotting, decrease risk of colon cancer, maintain a healthy body weight. Ion transport: maintain blood pressure, secretion of hormones, enzymes and neurotransmitters, occurs continuously, old protein matrix is replaced and remineralized. Insufficient calcium to incorporate into matrix = osteoporosis. Osteoporosis: disease characterized by low bone mass and deterioration of bone tissue. Increased bone fragility and risk of fracture (broken bones), particularly of the hip, spine and wrist: 1. 4 million canadians (1 in 4 women; 1 in 8 men over 50yrs, preventable, http://www. osteoporosis. ca/ Risk factors: female, menopause, calcium/vit d deficiency, smoking and alcohol, physical inactivity, genetics. Hped 2507: fluid milk and cheese ~50% of the calcium in the diet of adults 18-65 yrs, bok choy, beans, spinach.
