Celiac disease is often under-diagnosed (or misdiagnosed as irritable bowel syndrome or other ailments). At the other extreme, many people themselves, or the family members who arrange their care, simply decide they are either gluten intolerant or wheat allergic. In many cases, truth be told, they are correct. Wheat and gluten are difficult for many people, old or young, to digest.
In preparing food for a person in home care who has any of these conditions, the safest course is to avoid all products containing either wheat or gluten, in other words to follow a diet appropriate for someone with celiac disease.