The study, published in the journal Pediatrics, found more than a fifth of the children were selective eaters. Of these, nearly 18 per cent were classified as "moderately picky" and about 3 per cent as "severely selective".
Children with moderate and severely selective eating habits displayed symptoms of anxiety and other mental problems.
Dr Zucker added: "These are children whose eating has become so limited or selective that it's starting to cause problems. Impairment can take many different forms. It can affect the child's health, growth, social functioning, and the parent-child relationship. The child can feel like no one believes them, and parents can feel blamed for the problem."
A bad experience with food could lead to anxiety when a child is given something else that is new and untrustworthy. New remedies were needed for sensitive children with frequent experiences of "palpable disgust", Dr Zucker said.
- AAP