Implementing Low-Calorie Days Weekly May Support Weight Loss and Blood Sugar Management in Diabetes

A recent study suggests that incorporating low-calorie days into weekly routines can be beneficial for weight loss and blood sugar control in individuals with obesity and type 2 diabetes. Different calorie restriction strategies, including the 5:2 diet, time-restricted eating, and continuous calorie reduction, were examined.

Key Findings

• Weight loss is effective in managing type 2 diabetes, a condition characterized by high blood glucose levels.
• Finding a sustainable diet approach is crucial, as weight loss can be challenging.
• The study indicates that intermittent energy restriction (e.g., the 5:2 diet) proved slightly more effective in regulating blood sugar and improving insulin sensitivity.
• All tested strategies led to weight loss and improved glycemic control, with the 5:2 diet showing high adherence.

Study Details

Conducted at Zhengzhou University, China, the study involved 90 participants with type 2 diabetes and obesity, assigned to three diet groups:

• Intermittent Energy Restriction (IER): Very low-calorie intake on two non-consecutive days per week.
• Time-Restricted Eating (TRE): Eating within a 10-hour daily window.
• Continuous Energy Restriction (CER): Consistent calorie reduction without time constraints.

Participants experienced an average weight loss of 7.5 kg and reduced HbA1c levels by over 1%.

Expert Insights

Dr. David M. Cutler, a family medicine physician, noted that all three approaches benefit glycemic control and weight loss, although no significant difference was found among them. Haohao Zhang, PhD, highlighted the importance of dietary adherence and the need for further research across diverse populations.

Practical Recommendations

• The 5:2 diet may offer the highest benefits and adherence potential.
• Individualized dietary plans, supported by healthcare professionals, are essential.
• Any sustainable dietary restriction can be effective if followed consistently.

Conclusion

Adopting flexible low-calorie or intermittent fasting strategies can help manage obesity and type 2 diabetes. Patients should consult with healthcare providers to choose the most suitable approach for their lifestyle and health goals.