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Another good antioxidant
Why are spinach, kale and other greens so good for you? One reason: They are packed with the antioxidant lutein, a yellow pigment (the yellow is covered up by chlorophyll in green leaves) with newly discovered powers to fight disease.
"We all used to talk about beta carotene [the orange pigment in carrots] in preventing disease. It's now lutein," says Frederick Khachik, Ph.D., senior researcher at the University of Maryland. "Lutein is just as important to health, or more so, than beta carotene."
Evidence is impressive and growing
Researchers speculate that lutein switches off carcinogenic activity and boosts immune functioning.
Amount of Lutein in Foods
-- USDA-NCC Carotenoid Database for USA Foods, 1998
Saves Aging Eyes
-- Investigative Ophthalmology and Visual Science, 2000; 41:3322Ÿ3326
-- Seddon, Johanna M. JAMA, 1994: 272: 1413-1420
-- Journal of the American Optometric Association, 1999 , 70:24-36
-- Gale CR. Ophthalmology 108: 1992-98, 2001
-- Brown L. Am J Clin Nutr 70:517-524, 1999
Discourages Cancer
-- Kyung-Jin Yeum. J Nutr 128:1920-1926, 1998
-- Slattery ML. Am J Clin Nutr 2000 Feb; 71(2): 575-82
-- Prostate: Lu QY, Cancer Epidemiol Biomarkers Prev 2001 Jul: 10(7): 749-56).
-- Ovarian: Bidoli E. Ann Oncol 2001 Nov; 12(11): 1589-93)
-- Lung: Ziegler R. Am J Epidemiol 145 (supll.):S79, 1997)
-- Breast: Park JS, Journal of Nutrition, 1998; 128:1650-1656
-- Sumantran, V.N., et al. Cancer Epidemiol Biomarkers Prev 9(3): 257-63
Prevents Clogged Arteries
-- Dwyer JH. Circulation 2001 Jun 19;103(24): 2922-7
Delays Lung Aging
-- Schunemann HJ, et al. Am J Epidemiol 2002 Mar 1:155(5): 463-71
Combats Arthritis
-- De Roos AJ. Public Health Nutr 2001 Oct; 4(5): 935-42
Why are spinach, kale and other greens so good for you? One reason: They are packed with the antioxidant lutein, a yellow pigment (the yellow is covered up by chlorophyll in green leaves) with newly discovered powers to fight disease.
"We all used to talk about beta carotene [the orange pigment in carrots] in preventing disease. It's now lutein," says Frederick Khachik, Ph.D., senior researcher at the University of Maryland. "Lutein is just as important to health, or more so, than beta carotene."
Evidence is impressive and growing
Researchers speculate that lutein switches off carcinogenic activity and boosts immune functioning.
Amount of Lutein in Foods
-- USDA-NCC Carotenoid Database for USA Foods, 1998
Saves Aging Eyes
-- Investigative Ophthalmology and Visual Science, 2000; 41:3322Ÿ3326
-- Seddon, Johanna M. JAMA, 1994: 272: 1413-1420
-- Journal of the American Optometric Association, 1999 , 70:24-36
-- Gale CR. Ophthalmology 108: 1992-98, 2001
-- Brown L. Am J Clin Nutr 70:517-524, 1999
Discourages Cancer
-- Kyung-Jin Yeum. J Nutr 128:1920-1926, 1998
-- Slattery ML. Am J Clin Nutr 2000 Feb; 71(2): 575-82
-- Prostate: Lu QY, Cancer Epidemiol Biomarkers Prev 2001 Jul: 10(7): 749-56).
-- Ovarian: Bidoli E. Ann Oncol 2001 Nov; 12(11): 1589-93)
-- Lung: Ziegler R. Am J Epidemiol 145 (supll.):S79, 1997)
-- Breast: Park JS, Journal of Nutrition, 1998; 128:1650-1656
-- Sumantran, V.N., et al. Cancer Epidemiol Biomarkers Prev 9(3): 257-63
Prevents Clogged Arteries
-- Dwyer JH. Circulation 2001 Jun 19;103(24): 2922-7
Delays Lung Aging
-- Schunemann HJ, et al. Am J Epidemiol 2002 Mar 1:155(5): 463-71
Combats Arthritis
-- De Roos AJ. Public Health Nutr 2001 Oct; 4(5): 935-42
