BIOL 1020 Lecture Notes - Collagen, Fluoride, Sedentary Lifestyle
4 Dec 2012
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Document Summary
Have many important roles in the body. Bone diseases can be life-threatening and debilitating. Steady change in size and shape of bones. Bones reach final size (length) and shape. Bone mineral content (in grams) measured in a certain area (cm2) of bone. Diagnose osteoporosis (chart on course link) t-score compares your bone density to average peak bone density of a 30 yr. old healthy adult low bone mass ( less than minus one to minus 2. 5) osteopenia (reversible) Most prevalent bone disease in north america. Women 3 x higher risk than men. Estrogen decreases bone resorption and increases bone formation. Without estrogen bone remodeling balance is uneven, start to decrease our bone density (graph on course link) Ethnicity asian and caucasian populations are higher risk. Like other fat-soluble vits: we store excess amounts in liver & body fat. Unlike other nutrients: does not always need to come from diet.
