The author deals with the effect of vitamin D on bone as well as other tissues of the human body. The sources of vitamin D intake and production in children are assessed.
During periods of time without exposure to sunlight, the organism is dependent on vitamin D intake through food or on its replacement. The currently employed preventive recommendations to supplement vitamin D intake in infants are in accordance with the needs of a child's organism.
However, there is a question whether these measures are sufficient in the Czech Republic. Further targeted studies will be required to address this issue.