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Vitamin B12
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Vitamin B12: Recommendations
Recommended dietary allowances (RDAs) are defined as the levels of intake of essential nutrients that, on the basis of scientific knowledge, the Food and Nutrition Board judges to be adequate to meet the known nutrient needs of practically all healthy persons.
The best way to get the daily requirement of essential vitamins is to eat a balanced diet that contains a variety of foods from the food guide pyramid.
Because vitamin B12 comes primarily from animal products, people who follow a strict vegetarian diet and do not consume eggs or dairy products may require vitamin B12 supplements. (Non-animal sources of vitamin B12 exist but are highly variable in their B12 content, and are therefore unreliable sources.)
Specific recommendations for each vitamin depend on age, gender, and other factors (such as pregnancy). The U.S. Department of Agriculture offers a PDF file that lists these recommendations.
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• Definition
• Vitamin B12: Overview & Functions
• Vitamin B12: Food Sources
• Vitamin B12: Recommendations
• Vitamin B12: Side Effects
• Pictures & Images
Topics that might be of interest to you Diseases & Conditions
• Pernicious Anemia
Other Topics
• Balanced Diet
• Central Nervous System
• Food Guide Pyramid
• Metabolism
Review Date : 1/18/2003
Reviewed By : Steven Angelo, M.D., Assistant Professor of Medicine, Yale School of Medicine, New Haven, CT. Review provided by VeriMed Healthcare Network.
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