Calcium Intake Insufficient in U.S. Adults

A recent report revealed that adults in the U.S. are not consuming adequate calcium for optimal health. Calcium is the most abundant mineral in the body. In addition to bone health, calcium is also important for vascular function, nerve transmission, muscle contraction and cell communication.

Data from the National Health and Nutrition Examination Survey from 2003-2006 was evaluated for calcium intake across adult age groups and calcium intake relative to total energy intake. Calcium intake and supplement use was assessed using 24-hour recall and questionnaires. Data was evaluated from 9,475 U.S. adults. The subjects were evaluated for dietary calcium, total calcium, energy intake, and calcium to energy intake ratios to measure nutrient density.

The results showed that in the age group including adults age 81 or older, the median dietary calcium intake was 23 percent lower in men and 14 percent lower in women compared to adults 19-30 years of age. Also, in the group of adults age 81 and older, the median energy intake was 35 percent lower in men and 28 percent lower in women. The study also found that calcium supplementation increased with age. In women who supplement calcium, the median dietary calcium intake declined greater than in the women who did not take calcium supplements. Furthermore, calcium density in the diet increased with age. However, the dietary calcium and total calcium to energy ratios were insufficient to meet target ratios for adequate intake standards in adults over age 50.

The study authors concluded, “Although supplemental calcium use and calcium density were highest in older age groups, they were not sufficient in meeting recommended levels.”

Reference:

Mangano KM, Walsh SJ, Insogna KL, Kenny AM, Kerstetter JE. Calcium Intake in the United States from Dietary and Supplemental Sources across Adult Age Groups: New Estimates from the National Health and Nutrition Examination Survey 2003-2006. J Am Diet Assoc. 2011 May;111(5):687-95.