An explanation
Although the main focus of this blog-site is, by definition, on diabetic foods and diabetic food lists, there is much general information regarding diabetes that is worth dealing with here. Information that may be of interest especially to anyone recently diagnosed as having diabetes. And that includes simple explanations of diabetic topics that I myself wanted to find out about when I first became a “diabetic”.
Diabetes is a serious non-infectious chronic and progressive disease affecting about 25 million persons in North America. By chronic and progressive we mean that it is of long duration and tends to grow worse over time. There are three main types of diabetes, known as type-1, type-2, and gestational diabetes, but we will concentrate here on type-2 diabetes the version that occurs in more than 90 percent of all diabetes cases. A brief description of type-1 and gestational forms of diabetes is given elsewhere on this site.
Diabetes is the condition in which too much glucose is circulating in the bloodstream.
This occurs because of an impaired mechanism that normally operates in the body in a series of steps prompted by signals from other organs that react when food enters the stomach after eating.
The procedure involves an organ called the pancreas that produces insulin, a hormone that has the ability to join with glucose in the blood as it travels to the organs and cells of the body. Glucose is a simple sugar, a carbohydrate, and is the major source of energy needed by all the cells of the body in the performance of their metabolic functions. Some cells, such as brain cells and red blood cells, depend solely on the delivery of glucose from the blood stream.
If we think about that for just a moment, we can understand why our diabetic condition, with its impaired ability to deliver glucose to our brain and other cells, is so serious and that we must take appropriate actions to minimize the negative effects.
When we eat food it passes into our stomachs where digestion takes place and the mechanical and chemical actions of digestion process the food and produces the many nutrients, including glucose that is mainly obtained from the carbohydrate content of the foods we have eaten. The nutrients are absorbed through the walls of the intestines and pass into the bloodstream that will then distribute them to all the organs and cells of the body.
The body can keep a constant supply of glucose for the cells by maintaining a constant level of glucose in the blood. When needed it is there for the cells and when, after eating, an excess builds up and an over-supply occurs, the body, through its marvelous mechanisms, stores the excess glucose in the liver and muscles by converting the glucose into glycogen, which is a long chain of glucose molecules. If glucose levels become low, the stored glycogen is available for conversion back to glucose and at the same time the body stimulates the brain to urge you to eat more food.
But the glucose cannot get into the cells without assistance, assistance that is provided by a hormone called insulin that is mainly produced by another organ, the pancreas. The pancreas also produces a hormone called glucagon (not to be confused with the previously mentioned glycogen, and it is confusing I know) but glucagon plays an opposite role to insulin, It comes into play when the glucose levels begin to get too low and then assists in the conversion back to glucose of the previously mentioned stored glycogen in the liver and muscles.
The actions of both of those hormones, insulin and glucagon, work constantly to keep glucose concentrations in the blood to within an acceptable ranges for good health. In the case of the diabetic that balance is impaired and the glucose levels are not maintained within the appropriate ranges.
Insulin performs several important functions, one of which is to carry glucose molecules and conduct them to receptors that are on the outer membrane of cells where the unique structure of the insulin molecule complements the unique structure of the receptors, allowing them to “dock”, that is, to join together, and thereby the glucose is released and enters into the cell, another almost miraculous process of life.
In diabetics, this system does not work properly if at all
For several possible reasons, in persons suffering from diabetes the system does not operate in the way described above. Sometimes the pancreas does not produce enough insulin and sometimes the receptors of the cells become desensitized and do not react properly to the presence of insulin, not permitting the absorption of glucose into the cells and sometime it is a combination of both of those conditions.
Because of this the glucose stays in the bloodstream, and insulin too, both of which are unhealthy conditions. And too high a level of glucose in the blood, by definition, is diabetes.
So it is worthwhile to learn about certain foods and whether they are appropriate, as a diabetic, to eat as an everyday item. A single favorite treat, such as a muffin eaten at snack time each day by many people, is probably too much of a burden for the diabetic. That and a few others may have to be left off the diabetic food list, perhaps to be included only occasionally when in good control of blood sugar levels.
Also, a dietary adjustment, as recommended by dietitians and health care professionals may alleviate the diabetic conditions to some extent. But even the adoption of a new dietary regimen may not be sufficiently effective and medications may need to be prescribed. For many, including myself, that becomes a path to increased medications and potential problems – but we will deal with that elsewhere together with other aspects of diabetes.
Meanwhile, for information on a variety of other topics dealing with diabetes, in addition to this site, you can check out my companion sites at Normal Blood Sugar Levels and Diabetes and Diabetic Menu Guide.
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Tags: bloodstream, brain cells, carbohydrates, diabetes, Diabetic food list, Diabetic foods, digestion process, food lists, glucagon, glucose, glycogen, hormone, insulin, membranes of cells, nutrients, receptors, red blood cells