Until today there has been a lot of misunderstanding in treating diabetes with food, especially when it is related to fruits.

You may not have time for this excellent video which may also be a bit too technical for most patients.

In short: Fruits are healthy and essential for patients with diabetes but so often forbidden to patients by doctors or dieticians!
Fruit juices are the PROBLEM, and all kinds of fruit shakes, not whole fruit!!

Apples and apple sauce[ resek tapuchim] are not the problem, but apple juice IS a problem.
So also for all juices in principle.
This is a summary of the video in which it explains why.