Pregnancy: Increased blood volume and hormonal changes during pregnancy can elevate the risk of DVT. Oral contraceptives and Hormone Replacement Therapy (HRT): These can increase blood clotting tendencies. Surgery: Gynecological surgeries, such as hysterectomy or ovarian surgery, may require extended periods of immobility, raising DVT risk. Age: Women over 35 years, especially those who smoke or have other health conditions, are at higher risk. Obesity: Excess weight increases pressure on the veins, contributing to clot formation.