Inadequate oxygen supply occurs when the body or a specific tissue does not receive enough oxygen to function properly. This can happen due to various reasons, such as respiratory issues, high altitudes, or certain medical conditions. When oxygen levels drop, cells may not perform optimally, leading to fatigue, confusion, or even organ damage. The body relies on hemoglobin in red blood cells to transport oxygen from the lungs to tissues. If the supply is insufficient, symptoms like shortness of breath, rapid heartbeat, and dizziness may arise. Addressing inadequate oxygen supply often involves improving lung function or increasing oxygen availability through medical interventions.