I've been a diabetic for over 10 years. My mother had it; it killed her at age 56. Her mother had and although she lived into her 80s it cost her both legs (amputated below the knees, several years apart).
My doctor told me not to eat bread, potatoes, rice, pasta and cereal. Also corn, peas, oranges, grapes which I liked. When I was diagnosed I got rid of my toasters.