A diabetic grocery list should include lean meats and whole grains. Avoid processed foods and foods with a lot of simple sugars and sugary foods.
You can find a diabetic food list at http://diabetes.webmd.com/diabetic-food-list-best-worst-foods. It will help explain what foods to eat and what to stay away from.
There are many resources that can be used to locate a list of diabetic foods. A doctor can provide a list of preferred diabetic foods and foods to stay away from. Another great resource is WebMD, where a list titled, "Best and Worst Diabetic Foods" can be found.
A list of food that diabetics should avoid eating can be found at Livestrong and include donuts, white bread, bagels, waffles, corn chips, pretzels, pizza, potatoes, and watermelon.
You can find out more info about it here: diabetes.webmd.com/diabetic-food-list-best-worst-foods. Please be sure to check with your doctor to see if it is right for you.
With a diabetic diet, you will mainly need to cut sugars and fats out of your foods. You need to eat things that are fresh and healthy, your doctor can also give you a list of foods.
Diabetic Diet Food List includes recommended and restricted foods for diabetics. Diabetic Food List may vary for each patient. The physician will determine the list for the patient.
You can find a delicious diabetic food list on the following website: http://diabetes.webmd.com/diabetic-food-list-best-worst-foods. They have some great food listed.
Foods that diabetics should avoid: anything with sugar, foods high in carbohydrates (pasta, bread), caffeine (this causes a constriction of the veins and reduces blood flow). Foods that diabetics should eat: low GI / glycemic index vegetables such as broccoli, celery, spinach. Protein can come from turkey, chicken, beef or fish but pork should be eaten sparingly. Nuts, grains and beans are also excellent foods for diabetics but moderation is the key for all types of food regardless of the calories or carbohydrates.
I would suggest you talk to a dietitian and workout a diet plan for your father. A person with diabetic can consume many different type of food with proper manual planning. Here is the link of diabetic shopping list: http://www.realage.com/cm/realage/data/Diabetes_Friendly_Shopping_List-v05.pdf
To find out whether the diabetic snacks that were given to you by a close friend is beneficial or not will depend on the list of ingredients. To find out more information about a diabetic diet and what types of foods and snacks that will be safe to eat, go to http://www.mayoclinic.com/health/diabetes-diet/DA00027.
There are not many websites that provide a specific "Diabetic food list" ,so I would recommend you go to your doctor to find some foods that are good for diabetics. Generally fruits, vegetables ,and grains are good for people with diabetes.