NSC 101 Chapter Notes - Chapter 10: Macular Degeneration, Circulatory System, Zeaxanthin

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Document Summary

Production during energy metabolism, exersice, many cellular activities, and immune system. Oxidative stress: imbalance between production of reactive compounds and body"s ability to protect against their adverse effects. Antioxidants offer protection: antioxidant systems, become oxidized- they take the hit. Chemical damage from free radicals linked to: cancer, atherosclerosis, arthritis, dm, emphysema, kidney disease, alzheimer"s disease, parkinson"s disease, cataracts defense against free radicals. Require selenium, manganese, zinc, iron, copper ex: superoxide disputes (sod: antioxidant chemicals. Ability to prevent or repair damage caused by oxidation. Derived from food nutrients: vitamins, vitamin precursors, phytochemicals. Dietary antioxidant: vitamins c and e, selenium and phytochemicals. Plants contain pigments called carotenoids, carotenoids are phytochemicals with health promoting chemicals. 3 carotenoids are provitamins- can be turned into vitamin a: beta-carotene, alpha-carotene, and beta-cryptoxanthin. Other carotenoids that may have health bene ts: lycopene, zeaxanthin, lutein functions of the carotenoids. Vision: reduce macular degeneration, leading cause of legal blindness in north america.

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