• Review the literature and interpret the depth of current knowledge of calcium, phosphorus, magnesium, vitamin D, and fluoride requirements for each stage of the lifespan.

  • Analyze the literature coupled with information available from large epidemiological studies to determine dietary intakes of calcium, phosphorus, magnesium, vitamin D, and fluoride in the U.S. and Canadian populations and the potential for such intakes to be associated with decreased risk of chronic disease.

  • Review the other components in foods that affect the utilization of calcium and related nutrients in human diets, including bioavailability from nonfood sources.

  • Evaluate comparable standards from other countries and multinational groups for whom recommended nutrient ranges have been developed and consider the applicability of the recommended nutrient range for use in North America.

  • Develop dietary reference intake values for calcium, phosphorus, magnesium, vitamin D, and fluoride, where adequate data are available, for each stage of the lifespan including people older than 50 years.

  • Identify research needed to improve knowledge of calcium, phosphorus, magnesium, vitamin D, and fluoride requirements.

The Subcommittee on Upper Reference Levels was charged with the following:

  • Develop a model to estimate the maximum level of nutrient intake that would pose a low risk of adverse effects.

  • Apply the model to calcium, phosphorus, magnesium, vitamin D, and fluoride to develop Tolerable Upper Intake Levels.



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement