Some of the foods a diabetic person should consider eating are fruits, especially apples and pomegranates, spices such as cinnamon, oatmeal, green vegetables, and a diabetic must consume lots of protein.
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.
Each diabetic reacts differently to different foods. To figure out what works for your body, make your own personal diabetic food list. Include the type of food and what it does to your sugar levels.
A helpful website for learning and making a good diet for your lifestyle is myfoodpyramid.gov It can tell you how many of each food group you should be eating each day, it even has recomendations for each food group!
The diabetic food chart contains much, much less sugar filled foods as these cause problems in the digestive systems of diabetic people. Fatty foods should be avoided.
Yes, Purina for example carries a diabetic dog food. It's called "Purina Veterinary Diets DCO" http://www.dogsupplies.com/pages/Diabetic-Dog-Food-And-What-To-Feed-A-Diabetic-Dog.html
the differing widths of the bands tell you what proportion of your diet should come from each food group
Since some food from each food group is necessary for good nutrition, there is no "best" food group.
Whether or not to follow a diabetic menu plan by a non-diabetic is a decision that should be made by a patient and their doctor. Diabetic plans are usually balanced and designed for healthy eating. Sample diet can be studiedhttp://www.dlife.com/diabetes-food-and-fitness/what_do_i_eat
Each meal should contain each food group. Example:chicken fingerscornbananarollmilk
Activity level
A diabetic should eat low calories food all the time. He should eat salads more often and eat sweet dishes to very minimum level and prefer baked food as it reduces cholesterol levels.
I don't think there are any specific alternatives to diabetic food. If you have diabetes and are allergic to diabetic food you will have to monitor, make due, and eat food that is more "traditional."