Reactive Oxygen Species in Diabetes

Reactive oxygen species (ROS) are highly reactive molecules that serve dual functions in diabetes. Although ROS are necessary for normal cellular signaling, excessive production—often due to high blood sugar—can trigger oxidative stress, harming cells and tissues. In diabetes, elevated ROS levels contribute to insulin resistance, damage blood vessels, and impair pancreatic beta cells, exacerbating disease progression. Oxidative stress from excess ROS also fuels inflammation and accelerates long-term complications like retinopathy and neuropathy. Treatments focusing on antioxidants or reducing ROS production can improve insulin sensitivity and mitigate these harmful effects. Balancing ROS production and removal is essential for developing effective diabetes therapies and reducing complications.