From the Book "Food Is Your Best Medicine"

"In treating adult diabetics I have been able to control sugar in the urine by diet alone... I place the patient on a cleaner diet. The most valuable regime for the diabetic is a vegetable diet-cooked, non-starchy vegetables and vegetable soups. My aim is to aid the depleted pancreas, whose chief chemical element is a potassium-compound. So the potassium rich vegetables are of special value. If the potassium level can be built up, this not only rebuilds the pancreas but neutralizes a great deal of the acidity which is always in the background in diabetes.

The best way to handle a diabetic case, I have found, is to take him off insulin and to put him to bed. If the patient will not accept this and the rather rigorous diet, then I am powerless to help. The diet consists of lightly cooked non-starchy vegetables, like celery, parsley, zucchini and string beans, liquified in a blender and used as a soup. The patient remains on this until the urine becomes sugar-free by test. He stays in bed to conserve his energy in order to give the liver and the pancreas every possible chance to do their work unmolested from the acids of exertion. It may take from one day to four days or more to get the patient sugar-free.

He is allowed then to resume his normal activities while following a fairly careful diet; he is watched to see how long it takes to develop sugar again. When this happens, he is once again "fasted" in bed on the vegetable soup. Generally then it takes half the length of time to get him sugar-free. What I work for is an ideal diet for his particular case which will maintain him sugar-free and still give him enough energy to do a certain amount of work."

More information on diabetes from another book:

"The biggest culprit seems to be polyunsaturated oil. Studies have shown that when polyunsaturated fats from the diet are incorporated into cellular structure, the cell's ability to bind with insulin decreases, thus lowering their ability to get glucose. In other words, the cell membrane which allows glucose to enter into the cell degrade when too much polyunsaturated oil is consumed in the diet. Insulin is then unable to get to cells. Polyunsaturated oils are easily oxidized and damaged by free radicals. Fats of all types, including polyunsaturated fats in the cell membrane can adversely affect the cell's function, including its ability to allow hormones, glucose, and other substances to flow in and out of the cell. Therefore, a diet high in refined polyunsaturated vegetable oils promotes diabetes.

The only fat that diabetics can eat without fear is coconut oil. Not only does it not contribute to diabetes, but it helps regulate blood sugar, thus lessening the effects of the disease. Research has shown that coconut oil improve insulin secretion and utilization of blood glucose. Coconut oil added to a diet enhances insulin action and improves binding affinity compared to other oils.

One of the consequences of diabetes is a lack of energy. This is due to the inability of cells to get needed glucose. Without the glucose to power cellular activity, metabolism slows down and the entire body becomes tired. Coconut oil raises metabolic rate causing the body to burn up more calories and thus it also promotes weight loss."

As for supplements, here's what I would suggest:

Plant-based enzymes are great to support the pancreas. If a person eats cooked foods, then the pancreas has to work so hard producing more and more enzymes to digest the cooked foods. By taking food based enzymes with cooked foods, a person can reduce the nutritional stress on the pancreas. Also enzyme therapy - taking 2-3 enzymes every hour on an empty stomach with the hope that such enzymes can replenish the enzyme depleted pancreas.

Learn more about Enzymes and Green Superfoods

Blue green algae is also fabulous for balancing blood sugar because it is very high in organic minerals. With diabetes there is a tendency to be deficient in vanadium and chromium which are important in regulating blood sugar. The blue green algae is abundant with these minerals.

The use of Co-Q10 is also highly recommended for diabetes. The amount of Co-Q10 that is recommended is 120 mg to 300 mg a day. Research findings found that Co-Q10 improve insulin sensitivity and hyperglycemia. Also Co-Q10 prevents excessive free radical oxidative stress.

In short, if you want to reverse your diabetes, you have to make a significant lifestyle change. You need to do what Bieler said in his book for a few days and test your sugar level after that.