what causes blood clots in legs

5 hours ago 4
Nature

Blood clots in the legs, often called deep vein thrombosis (DVT), form primarily when blood flow in the veins slows down or becomes blocked. Several factors contribute to this condition:

  • Prolonged immobility: Sitting or lying down for long periods, such as during bed rest, long flights, or car rides, slows blood flow and increases clot risk
  • Vein damage: Injury, surgery, or inflammation can damage veins, triggering clot formation
  • Hormonal factors: Use of birth control pills, hormone replacement therapy, or pregnancy raises clotting risk due to increased blood coagulability and vein pressure
  • Medical conditions: Cancer, heart failure, genetic clotting disorders, and infections can increase clot risk
  • Lifestyle factors: Smoking and obesity impair blood flow and promote clotting
  • Age and history: Older age, previous clots, or family history of DVT increase susceptibility

In essence, blood clots form when blood flow is sluggish or veins are damaged, and various risk factors like immobility, hormonal changes, medical conditions, and lifestyle contribute to this process