NUTR 100 Study Guide - Broccoli, Malabsorption, Hypercalcaemia
Document Summary
Proformed= carotenoids(beta- carotene,plants); most common are lutein and zeaxanthin. Prohormone; derived from cholesterol, synthesized from sun exposure, activated by enzymes in liver and kidney. Antioxidant, mostly in cell membranes, regulates exposure to free radicals to prevent cellular. Promotes vision, promotes growth, prevents xerophthalmia and night blindness, and cancer, and cardiovascular disease. Regulates blood calcium by working with pth, regulates calcium and phosphorus absorption, and deposition of calcium in bones. Night blindness= retina cannot adjust to low amounts of light. Xerophthalmia= dry eye; cause of blindness, lack of mucus production by the eye. Macular degeneration= disrupts central part of retina, so blurred vision. Rickets= poor mineralization of newly synthesized bones b/c of low calcium content. Large intake of preformed, taking too much accutane and retin-a. Preformed= liver, fish, fish oils, fortified milk and yogurt, and eggs. Proformed= dark green and yellow- orange veggies and some fruits. Toxic with infants, over- absorption of calcium (hypercalcemia), increase calcium excretion,
