Clinical meaning
Medical nutrition therapy (MNT) is a cornerstone of diabetes management, targeting glycemic control through carbohydrate management, portion control, and consistent meal timing. Carbohydrate counting allows patients to match insulin doses to carbohydrate intake, typically starting with 45-60 grams per meal for most adults. The glycemic index (GI) ranks foods by how rapidly they raise blood glucose, with low-GI foods (<55) causing slower, more controlled rises. Fiber intake of 25-30 grams daily slows glucose absorption and improves insulin sensitivity. Consistent carbohydrate intake prevents glycemic variability that damages vascular endothelium through oxidative stress. Protein does not significantly raise blood glucose and should comprise 15-20% of total calories. Dietary fat modification focuses on replacing saturated fats with monounsaturated and polyunsaturated fats to reduce cardiovascular risk.
Exam relevance
Risk factors: - Lack of diabetes education and carbohydrate awareness - Limited access to healthy food options (food deserts) - Cultural dietary patterns high in refined carbohydrates - Irregular meal patterns causing glycemic variability - Comorbid renal disease requiring additional dietary restrictions