Is eating only fruits good for people with Diabetes? My mother is 55 years old, and acts like a child sometimes. She goes to "group" At IHR, or, Institute for Human Resources. A person out there takes one day a week, and eats nothing but fruits. My mother thinks that she can get away with this. However, when she started eating nothing but fruits about 3 months ago, she was really sick, and we found out she has diabetes. I'm only 15, so I'm not really sure if this is OK for her. Both my mother and my father have diabetes, so I know I'm going to have diabetes. I'm just curious if this is good for her, or if it's not so good. She is severely overweight, and wants to lose weight. Only, she buys half gallon of ice cream, and eats it pretty muchly all by herself. My siblings and I tell her it's not good for her, but she is stubborn.
I'm sorry if this is a hassle, but I'm just concerned for her well-being. 
Thank you.

Summarized question: Does only a fruit diet good for people with Diabetes?