Vitamin K protects men against diabetes by reducing insulin resistance-a major factor in the development of type 2 diabetes.
Recent finding: Men who took 500 micrograms (mcg) of vitamin K daily for 36 months were significantly less likely to develop insulin resistance. The effect was not found in women.
Good food sources of vitamin K: Cooked kale, with more than 1,000 mcg per cup... cooked spinach, 760 mcg per cup... cooked collard greens, about 700 mcg per cup.
Sarah L. Booth, PhD, associate director, Vitamin K Research Laboratory at Tufts University's Jean Mayer USDA Human Nutrition Research Center on Aging, Boston.
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