The new Dietary Reference Intakes (DRI) for calcium were released August 13
, 1997 by the Food and Nutrition Board of the National Academy of Science.
Unlike the RDA's which established the minimal amounts of nutrients needed
to be protective against possible deficiency, the new values are designed t
o reflect the latest understanding about nutrient requirements directed at
optimizing health in individuals and groups. Adequate calcium intake recomm
endations were set at levels associated with desirable retention of body ca
lcium since high bone density is known to be less susceptible to fractures.
Recommended intake for adults is 1000 to 1200 mg/day. The majority of peop
le do not consume these levels of calcium. The upper tolerable limit for ca
lcium was set at 2.5 g/day.