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Tocopherols recommended daily intake

Rats that are deprived of vitamin E become infertile, but the reasons for this effect are unknown. Vitamin E is known to prevent the oxidation of double bonds in the hydrocarbon tails of membrane lipids, and this may be its major function. Because oxidation reactions accelerate aging, some researchers believe that vitamin E may help to retard the aging process. The RDA for vitamin E is expressed in a-tocopherol equivalents (a-TE) because this is the most active form of vitamin E. The recommended daily intake is 10 a-TE for males and 8 a-TE for females. This is roughly the amount of vitamin E in a tablespoon of vegetable oil. [Pg.779]

Supplementation with the antioxidant vitamins ascorbic acid (250 mg) and mixed natural tocopherols (50 IU on alternate days) may be beneficial. Higher doses may vitiate the impact of lipid lowering therapy. Other naturally occurring antioxidants such as resveratrol, 3-catechin, selenium, and various carotenoids found in a variety of fruits and vegetables may provide additional antioxidant defense. Homocysteine, which initiates proatherogenic changes in endothelium, can be reduced in many patients by restriction of total protein intake to the amount required for amino acid replacement. Daily supplementation with up to 2 mg of folic acid plus other B vitamins is also recommended. [Pg.796]

RDA for vitamin E was increased in the year 2000 by 50% from 10 to 15 mg/day for adults by the U.S. Food and Nutrition Board.Most European reference intakes are related to the polyunsaturated fatty acid intake. The changes in the United States were accompanied by some debate, critics arguing that this amount could not be met by the usual North American diet. For infants up to 6 months, an AI of 4mg/day was proposed, for infants 7 to 12 months an AI of 5mg/day and the RDA for children 1 to 18 years was set at 6 to 15 mg/day, dependent upon age. Another departure in the newer recommendations was that the daily requirement he met by RRR-a-tocopherol alone as the other forms of vitamin E are not converted to a-tocopherol and are poorly recognized by the a-tocopherol transfer protein in the liver. [Pg.1086]


See other pages where Tocopherols recommended daily intake is mentioned: [Pg.1300]    [Pg.1300]    [Pg.735]    [Pg.363]    [Pg.3370]    [Pg.8]    [Pg.9]    [Pg.209]    [Pg.430]    [Pg.485]    [Pg.247]    [Pg.474]   
See also in sourсe #XX -- [ Pg.33 , Pg.166 ]




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Daily

Daily intakes

Recommended daily intake

Recommended intake

Recommended tocopherols

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