Definitely the food. Google American Diabetes Association, there's good information to know about.
Change your diet to Low Carb ..... there are many FB pages that will help you. Its the carbs that you are eating that causes high blood sugars
my c gets stuck to mayoclinic.com
In usa you have Mayo Clinic mayocliniic.com
I watch what I eat, am very strict on myself, but my blood sugars never drop to below 14. I am on 48 units of humalog mix 50 with breakfast, 12 units at lunch anf 48 at night again. I am desperate to find a way to bring the blood sugars within normal range.