The condition only proves fatal when blood clots reach the lungs, as the rest of the organs rely on them for oxygen.

Doctor Andrei Kindzelski, an NIH blood disease expert explained that before a person suffers pulmonary embolism, they may experience swelling, pain, warmth and redness of the leg.

How to avoid blood clots

Taking steps to reduce the chances of a blood clot forming in the veins can help people avoid potentially life-threatening health problems.

The most crucial step in avoiding pulmonary embolism is preventing blood clots in the deep veins of the legs.

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