Can sitting too long cause blood clots?

Prolonged sitting can increase the risk of developing deep vein thrombosis (DVT), a condition where blood clots form in the deep veins, often in the legs. The medical literature indicates that sitting for long periods, such as during long flights or car rides, can lead to decreased blood flow in the legs. This reduced circulation can contribute to clot formation. Typical symptoms of DVT include unilateral leg swelling, pain, tenderness, and a feeling of warmth in the affected area. Clinicians often assess additional risk factors such as recent surgery, immobility, hormonal therapies, and a personal or family history of blood clots when evaluating for DVT. Anyone with concerns about blood clots or prolonged sitting should discuss their specific situation with their healthcare provider.