NUTR100 Chapter Notes -Manganese, Macular Degeneration, Carotene

• School: University of Alberta
• Department: Nutrition
• Course: NUTR100
• Professor: Sabina Valentine

Document Summary

Large quantities don"t appear to be toxic: skin can turn yellow (carotenoderma, taking beta-carotene supplements isn"t recommended as they aren"t associated with any health benefits. What if you don"t consume enough beta-carotene: there are no deficiency symptoms. Vitamin a: vitamin a is a fat soluble vitamin, excessive vitamin a is stored in the liver, adipose tissue, kidneys and lungs. There are 3 active forms of vitamin a: retinol, retinal, retinoic acid. Functions of vitamin a: essential to proper vision, antioxidant, protecting ldl cholesterol, cell differentiation the process by which cells mature and specialize, sperm production and fertilization, bone growth. Sources of vitamin a: obtained from animal sources of retinol (liver, eggs) and plant sources of provitamin a carotenoids (dark green, organge, and deep yellow fruits and veggies) Foods fortified with vitamin a in canada include reduced fat milks, plant- based milks, margarine.