UNESCO Chair on Diabetes Statement: “Sleep Without Blue Light from Mobile Phones”; Theme for World Diabetes Day 2025

On the occasion of World Diabetes Day 2025, the UNESCO Chair on Interdisciplinary Research in Diabetes at the University of Tehran issued a statement emphasizing the need to raise public awareness of the factors contributing to the development and progression of diabetes, particularly oxidative stress and lifestyle.

The statement explains that oxidative stress occurs when the balance between free radicals and antioxidants in the body is disrupted. This imbalance can damage various cells in the body, including pancreatic beta cells, which produce insulin, and may contribute to insulin resistance and the development of type 2 diabetes.

The statement further notes that adopting a healthy lifestyle remains the most effective way to counter this harmful cycle. A diet rich in natural antioxidants, regular physical activity, and weight management all play important roles in reducing oxidative stress and improving insulin sensitivity.

The UNESCO Chair also identifies adequate, high-quality sleep as one of the essential pillars of metabolic health. It warns that blue light emitted by mobile phone screens can disrupt the body’s natural sleep rhythm, potentially contributing to increased oxidative stress. The statement recommends that people put away their mobile phones at least one hour before bedtime and create a calm sleeping environment free from distractions.

Concluding with this year’s theme, “Sleep Without Blue Light from Mobile Phones,” the statement calls on the public to make informed lifestyle choices—including healthy eating, sufficient physical activity, and restful sleep—to take effective steps towards preventing diabetes and improving public health.