Dri For Vit A

Table 1 dietary reference intakes for vitamin a by life stage group dri values mg raea day earb rdac aid ule f males females males females life stage group 0 through 6 mo 400 600 7 through 12 mo 500 600 1 through 3 y 210 210 300 300 600 4 through 8 y 275 275 400 400 900 9 through 13 y 445 420 600 600 1 700 14 through 18 y 630 485 900 700.

Dri for vit a. Information for vitamin d and calcium has been updated since this report. Sufficient to meet the nutrient requirements of nearly all 97 98 percent healthy individu als in a group. Dri is the general term for a set of reference values used for planning and assessing.

Intake recommendations for vitamin a and other nutrients are provided in the dietary reference intakes dris developed by the food and nutrition board fnb at the institute of medicine of the national academies formerly national academy of sciences. And adequate intakes ais in ordinary type followed by an asterisk. The term vitamin a is used in the context of dietary requirements to include provitamin a carotenoids that are dietary precursors of retinol.

The rda provides enough vitamin a for the vast majority of people. Dietary reference intakes for vitamin c vitamin e selenium and carotenoids 2000. An rda is the average daily dietary intake level.

Other forms of vitamin e do not contribute toward meeting the requirement. And renders authoritative judgments on the relationships among food intake nutrition and health. The requirement for vitamin e is based on the 2r stereoisomeric forms of alpha tocopherol only this includes rrr alpha tocopherol which occurs naturally in foods and the 2r stereoisomeric forms rrr rsr rrs and rss forms that occur in supplements and fortified foods all racemic alpha tocopherol.

Dietary reference intakes for calcium phosphorus magnesium vitamin d and fluoride 1997 nas. It comes in a number of forms as retinol retinal retinoic acid or retinyl ester. Establishes principles and guidelines of adequate dietary intake.

Because 10 to 30 percent of older people may malabsorb food bound vitamin b12 it is advisable for those older than 50 years to meet the rda mainly by consuming foods fortified with vitamin b12 or a supplement containing vitamin b12. These documents are issued by the food and nutrition board of the institute of medicine national academy of sciences the food and nutrition board addresses issues of safety quality and adequacy of the food supply. Food and nutrition board.