Managing Diabetes Mellitus (DM) is a lifelong process that requires making daily decisions regarding food intake, blood glucose monitoring, medication, and physical activity. Because DM is a chronic multisystem disease characterized by hyperglycemia—resulting from either abnormal insulin production or impaired insulin use—nutrition therapy serves as a cornerstone of management. The primary goal of nutrition therapy is to achieve and maintain safe glucose levels, optimize lipid profiles, and manage blood pressure to reduce the risk of cardiovascular disease and long-term complications such as blindness, end-stage renal disease, and lower-limb amputations.
Nutrient Composition and Balance
Effective nutrition therapy focuses on a balanced intake of macronutrients tailored to the individual's specific needs. Because the metabolic requirements for Type 1 and Type 2 DM differ, there is no "one-size-fits-all" diet; instead, recommendations are individualized.
Carbohydrates and Dietary Fiber
Carbohydrates are the body's primary energy source and have the most direct impact on blood glucose levels. While there is no single ideal amount of carbohydrate intake, patients are encouraged to choose complex carbohydrates from whole grains, fruits, vegetables, and low-fat dairy. A critical component of carbohydrate quality is dietary fiber. To support metabolic health, a minimum intake of: is recommended.
Fats and Protein
To manage cardiovascular risk, the American Diabetes Association (ADA) recommends that $20%35%$ of total daily calories come from fat. The emphasis should be on:
- Healthy Fats: Plant-based fats such as those found in olives, nuts, and avocados.
- Polyunsaturated Fatty Acids: Consuming at least two servings of fish per week.
- Reduction: Minimizing the intake of saturated and trans fats.
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