Carbohydrate substitutes in diabetes – use and calculation

A fundamental aspect of the diet for individuals with diabetes is maintaining stable blood glucose levels. In this context, what role do metabolizable carbohydrates play? They are digested and absorbed in the small intestine and, upon consumption, elevate blood glucose levels, particularly glycogen, monosaccharides, and disaccharides. Conversely, non-metabolizable carbohydrates such as fiber do not affect blood glucose. Furthermore, research indicates that the same carbohydrate content in different foods can yield varying glycemic responses, depending on the rate of glucose increase post-consumption. Consequently, the glycemic index (GI) was established. It is advisable to select products with a low GI (below 55) or moderate GI (56–69). However, metabolizable carbohydrates cannot be entirely excluded from the diet, as they constitute the primary energy source, including the sole energy required for brain function. Additionally, they regulate metabolic processes, serve as building blocks for cellular structures, and participate in water and mineral metabolism.

A diabetes diet is designed to supply the body with essential energy and nutrients, maintain a healthy weight and stable blood glucose levels, and prevent complications. It plays a crucial role in treatment, equally as important as pharmacotherapy. In some cases, diet alone can balance diabetes. The Polish Diabetes Society estimates that 2.6 million people in Poland have diabetes. Due to its widespread occurrence across all age groups, patient education in self-managing their diet has become essential, particularly when taking medications or insulin. To facilitate this, carbohydrate exchange systems have been developed, enabling easy meal planning without requiring specialized knowledge or access to product tables with glycemic indices.

The quantity of dietary carbohydrates should be precisely adjusted to physical activity levels, training objectives, and individual insulin sensitivity. For individuals with moderate physical exertion, carbohydrates are recommended to supply between 45% and 60% of total energy needs, which translates in practice to a daily intake of at least 100 g up to a maximum of 300 g per day, emphasizing complex carbohydrates with a low glycemic index. per day, with clear clinical emphasis on complex carbohydrate sources exhibiting a low glycemic index and high dietary fiber content. per day, with clear clinical emphasis on complex carbohydrate sources exhibiting a low glycemic index and high dietary fiber content.

To thoroughly grasp the fundamental principles of using exchange values in dietary planning, it is essential to break down the entire process into several key stages. We will examine a specific case: a 30-year-old woman, weighing 65 kg, standing 166 cm tall, engaged in light physical labor, and diagnosed with type 2 diabetes. Each step will be explained in detail to ensure a comprehensive understanding of the underlying mechanisms.