Though we have often heard that whole grains are an essential part of a healthy diet, but this may not be true for everyone. According to Dr. Mercola, over 85% of Americans have trouble controlling their insulin levels which is related to the development of diabetes.
Eating carbohydrate-containing foods, whether high in sugar or high in starch (such as bread – even organic, whole-grain bread, potatoes, processed breakfast cereals, and rice), temporarily raises blood sugar and insulin levels. The blood sugar-raising effect of a food, called its “glycemic index,” depends on how rapidly its carbohydrate is absorbed. People eating large amounts of foods with high glycemic indices, have been reported to be at increased risk of type 2 diabetes.
However, diets high in total carbohydrates do not necessarily increase the risk of type 2 diabetes and some studies have found no independent relationship between sugar intake and the development of glucose intolerance.