Eating Patterns and Energy Restriction in Type 2 Diabetes: Comparing Intermittent Fasting and Daily Calorie Reduction

Lifestyle modification remains a cornerstone of type 2 diabetes mellitus (T2DM) management, yet long-term adherence to dietary interventions is often difficult to achieve. Continuous caloric restriction (CCR) has traditionally been recommended to promote weight loss and improve glycemic control, but alternative strategies such as intermittent fasting (IF) have gained increasing attention. IF focuses on cycling between periods of eating and fasting, rather than maintaining a constant daily calorie deficit. This mini-review summarizes emerging evidence comparing IF and CCR in individuals with T2DM, with emphasis on metabolic outcomes, feasibility, and clinical considerations. Current data suggest that IF produces glycemic and weight outcomes comparable to CCR, with potential advantages in insulin sensitivity and patient adherence. While not suitable for all patients, IF may represent a flexible and clinically relevant dietary option when individualized and appropriately monitored.