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DRI Dietary Reference Intakes Calcium Vitamin D
ULs for Pregnancy and Lactation
Pregnant or Lactating 14 Through 18 Years of Age
Pregnant or Lactating 19 Through 30 Years of Age
Pregnant or Lactating 31 Through 50 Years of Age
UL 4,000 IU (100 μg)/day Vitamin D
The available data do not indicate a basis for deriving a UL for pregnant and lactating women or adolescents that is different from those for their non-pregnant and non-lactating counterparts.
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Barger-Lux, M. J. and R. P. Heaney. 2002. Effects of above average summer sun exposure on serum 25-hydroxyvitamin D and calcium absorption. Journal of Clinical Endocrinology and Metabolism 87(11): 4952-6.
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Binkley, N., R. Novotny, D. Krueger, T. Kawahara, Y. G. Daida, G. Lensmeyer, B. W. Hollis and M. K. Drezner. 2007. Low vitamin D status despite abundant sun exposure. Journal of Clinical Endocrinology and Metabolism 92(6): 2130-5.
Blank, S., K. S. Scanlon, T. H. Sinks, S. Lett and H. Falk. 1995. An outbreak of hypervitaminosis D associated with the overfortification of milk from a home-delivery dairy. American Journal of Public Health 85(5): 656-9.