However, Clinton said the studies provided conflicting results and do not offer the evidence that confirms these additional benefits of vitamin D.
"What we have are intriguing other areas that warrant research," he said. "Yet the data at the moment is insufficient with regards to defining an appropriate intake. Bone health is the primary outcome."
As for calcium, the committee found that 700 milligrams per day of the nutrient is enough for almost all children aged 1 through 3, and 1,000 milligrams is right for almost all children aged 4 through 8. In addition, children and adolescents 9 through 18 need no more than 1,300 milligrams per day, Clinton noted.
For most adults aged 19 through 50 and for men up to 71 years, 1,000 milligrams daily is sufficient. For women aged 51 and older, and for both men and women aged 71 and older, 1,200 milligrams a day is enough, according to the report.
Clinton said that these levels are easily reached through a healthy diet and without the need for nutritional supplements.
The report also defined the upper safe levels of calcium and vitamin D, but stressed that people should not strive to reach these levels, since taking in too much of the nutrients brings its own hazards.
For vitamin D, the uppermost levels are 2,500 IUs per day for children aged 1 through 3; 3,000 IUs daily for children aged 4 through 8; and 4,000 IUs daily for everyone else.
For calcium, these outer ranges are 2,500 milligrams per day from age 1 through 8; 3,000 milligrams daily from age 9 through 18; 2,500 milligrams daily from age 19 through 50; and 2,000 milligrams per day for all others.
Taking in too much calcium from supplements has been linked with kidney sto
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