When a clot interferes with blood flow
It can happen to anyone, but heart disease increases the risk.
Blood clots are widely known to cause heart attacks and strokes. But many people aren't aware they can also cause venous thromboembolism (or VTE). In VTE, a blood clot slows or stops the flow of blood through the veins, most often in the legs (called deep vein thrombosis, or DVT) or lungs (called pulmonary embolism, or PE).