| Abstract: | A study to determine approximate intakes of vitamin D and sources contributing this nutrient was conducted among 1000 children, aged one week to 5½ years, in two Ontario Health Units in 1963 and 1964. Over 70% of the children obtained daily intakes above the recommended level, 400 I.U. Supplements provided about 60% of the total intake in children aged 7 months to 66 months who consumed 1000-1800 I.U. or more. In the intake range 1-399 I.U., fortified foods supplied 87% of the vitamin D to this age group. Influences of subsequent Food and Drug Directorate regulations, (a) withdrawing vitamin D from four foods used during the survey and (b) the effect of permissive vitamin D fortification of fluid milk products, were examined theoretically, by age and intake level. Programs directed to planning net intakes of 400 I.U. vitamin D, encouraging the use of fortified milk and discouraging the use of vitamin D supplements are described. |
