Opium, an important risk factor for deep vein thrombosis patients

Sir, Deep vein thrombosis (DVT) is a multifactorial disorder. Its risk factors are age of over 40 years old, being man, obesity, surgery, trauma, prolonged immobilization, smoking, diabetes, infectious disease, and chronic heart failure.[1] Important complications of DVT patients include pulmonary embolism, venous insufficiency, recurrence, and death. One of the most important DVT and metabolic syndrome risk factors that reported in recent studies is opium ingestion