Fresh vs. dried fruit

Micha, your father can rest assured that dried fruit is very high in nutritional value. The main difference between fresh and dried is the water content. (I believe there is a slight loss of some nutrients, but couldn't find any on-line info to share at the moment.) From what I can remember reading in the past, dried fruit is an excellent source of fiber and minerals.

Has he considered canned fruit as another alternative? Many people don't like canned fruits/vegetables because they're under the impression that they contain preservatives or lots of artificial stuff. If you read the labels and choose carefully you may be surprised to learn that most canned produce is prepared very simply. The canning process itself provides the preservation so chemicals are not necessary.