The Oxidative Stress Behind Sleep Apnoea's Damage

When the airway repeatedly collapses during sleep, the body is subjected to cycles of low and restored oxygen. This review focuses on what that does at the chemical level: it generates oxidative stress, an imbalance in which reactive molecules outpace the body's ability to neutralise them, damaging cells and tissues over time.

The authors survey the molecular pathology of obstructive sleep apnoea and the biomarkers — measurable chemical signatures — that reveal this oxidative damage. Crucially, they emphasise that the consequences reach far beyond disturbed sleep, contributing to systemic dysfunction across the cardiovascular, metabolic, and other systems.

This matters because biomarkers turn an invisible nighttime process into something measurable. Alongside the work on hypoxia-inducible factors elsewhere on this site, it fills in how disordered breathing inflicts harm body-wide: not through any single dramatic event, but through the slow accumulation of oxidative damage night after night. It's a molecular argument for why leaving the airway unaddressed carries a real, compounding cost.