The present invention is a method of providing food or nutrient information for improving or preventing autism or developmental delay based on the genetic mutation information obtained after performing a genetic test for children to obtain information on genetic mutation, and performing this method. A system, and a computer-readable recording medium on which a program for executing the method is recorded. According to the present invention, information on a diet for improving or preventing autism or developmental delay may be provided based on the result of a genetic test for a child with high risk of autism or developmental delay.
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