[Calcium and D vitamin status in toddlers: original study performed in the area of Rouen].
Few data are available regarding calcium and vitamin D intake in toddlers, despite a remaining high growth velocity. Therefore, a study was carried out in the Rouen geographical area where the sunshine is limited. It appears that a great majority of the children studied (9/10) received plain milk, and subsequently only small quantities of vitamin D or calcium enriched milk. Nevertheless, 12% of primarily 4 to 6 year-old children do not received daily minimum requirements, and 6% of them had vitamin D insufficiency, which was demonstrated by 25OHD plasma concentrations. These concentrations declined from 18 months to 6 years old were related to discontinuation in vitamin D supplements. A great variability was observed in vitamin D supplementation as no official recommendations were followed. Modalities of this supplementation should be reconsidered.