NUTR 1010 Lecture Notes - Lecture 23: Vitamin, Almond Milk, Wear Sunscreen
11 Jan 2017
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Document Summary
65% minerals: hydroxyapatite (calcium and phosphorous crystals) 35% organic substances: collagen (a fibrous protein) Structure and support: structural support for organs and body segments, protection of the brain and internal organs, muscle support for movement. Metabolic processes: mineral storage, production of blood cells in bone marrow. Also called cholecalciferol or calcitriol (active form) A fat soluble vitamin the (cid:862)su(cid:374)shi(cid:374)e vita(cid:373)i(cid:374)(cid:863) Also considered a hormone: a chemical messenger in the body. Conditionally essential nutrient: we can make it ourselves if were exposed to enough sunlight. If not, we have to get it from foods. Important for calcium balance: helps absorb calcium, helps retain calcium (decreased excretion, helps regulate blood levels of calcium. Importance in preventing dna mutation: role in cancer prevention. Immune system function: vitamin d may play a role in helping the body fight viruses and infections. We synthesize it from a form of cholesterol in our skin (need uv light from sun) People who live fat from the equator.
