This study investigated calcium and vitamin D intake in healthy children. 184 children with intake below recommendations were randomly assigned to receive dietary counseling plus calcium/vitamin D supplements (Group 1) or counseling alone (Group 2). After 4 months, Group 1 showed improved intake of both nutrients and optimal vitamin D levels, while Group 2 only improved calcium intake and had lower vitamin D levels. The study concludes that counseling alone is not sufficient to achieve adequate vitamin D intake.