Rickets in infants attributable to inadequate vitamin D intake and decreased exposure to sunlight continues to be reported in the United States. It is recommended that all infants, including those who are exclusively breastfed, have a minimum intake of 200 IU of vitamin D per day beginning during the first 2 months of life. In addition, it is recommended that an intake of 200 IU of vitamin D per day be continued throughout childhood and adolescence, because adequate sunlight exposure is not easily determined for a given individual. These new vitamin D intake guidelines for healthy infants and children are based on the recommendations of the National Academy of Sciences.
Prevention of Rickets and Vitamin D Deficiency: New Guidelines for Vitamin D Intake
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Lawrence M. Gartner, Frank R. Greer, Section on Breastfeeding, Committee on Nutrition; Prevention of Rickets and Vitamin D Deficiency: New Guidelines for Vitamin D Intake. Pediatrics April 2003; 111 (4): 908–910. 10.1542/peds.111.4.908
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