Iceberg Lettuce Conventional wisdom suggests this salad staple is nutritionally bankrupt. But as it turns out, half a head of iceberg lettuce has significantly more alpha-carotene, a powerful disease-fighting antioxidant, than either romaine lettuce or spinach.
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Red Leaf Lettuce Four leaves contain 1,213 mcg of antioxidants, 96 mcg of vitamin K (shown to maintain bone mass), 1,172 mcg of the carotenoids lutein & zeaxanthin. The National Institutes of Health found that lutein & zeaxanthin can decrease risk of developing macular degeneration by 43%. OTHER NUTRIENTS: vitamin A, vitamin B6, vitamin C, folate, and potassium DISEASE-FIGHTING POWER: osteoporosis, macular degeneration, cancer, heart disease, hypertension, Alzheimer's, & weight gain