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11 Facts You Probably Didn't Know About Blood Clots

The importance of not being idle.

1. A blood clot can happen to anyone.

2. More people in Europe die from blood clots than AIDS, breast cancer, prostate cancer, and road traffic accidents combined.¹

3. Pulmonary embolism – a blood clot in the lung – is the most common avoidable cause of hospital death in the world.²

4. Did you know, 85% of all strokes are caused by blood clots?⁴

5. They cause heart attacks too.

6. You probably will have heard of deep vein thrombosis (DVT).

7. But it's a pulmonary embolism (PE) that can prove to be rapidly fatal.⁹

8. Four out of five people wouldn't recognise a blood clot in their lungs if they experienced one.¹ᴼ

9. Meanwhile, DVT can look pretty innocuous too.

10. Some 10 to 30% of people affected by DVT/PE die within a month of diagnosis.¹³

11. But you can help to reduce your risk by making time to move regularly and spreading the word.

Blood clots are a condition with no boundaries.

In fact, in the time you've been reading this page, between 3-5 people in the Western world will have died from a venous blood clot.3

But crucially, they can be prevented and if needed, treated. So join the cause and find out how you can help raise awareness at

¹ Cohen AT et al. Thromb Haemost. 2007; 98 (4):756-764 ² Geerts WH et al. Chest. 2008;133,(6 Suppl)381S-453S ³ Calculation extrapolated from the number of estimated VTE-related deaths across the EU (543,454 – see reference a) and US (300,000 – see reference b) per annum, divided by the number of seconds in a year. a) Cohen AT et al. Thromb.Haemost. 2007;98,(4)756-764, b) Roger VL et al. Circulation. 2012;125(1):e2-e220 ⁴ Intercollegiate Stroke Working Party. National clinical guideline for stroke, 4th edition. London: Royal College of Physicians 2012 P4 ⁵ NHS Choices. Stroke – Causes. July 2015. ⁶ American Heart Association. About Heart Attacks. July 2015. ⁷ Patient UK. Deep vein thrombosis. June 2015.⁸ Thrombosis UK: The Thrombosis Charity. Reducing the risk of e-thrombosis. February 2013 ⁹ Kearon C. Circulation. 2003;107,(23 Suppl 1)I22-I30 ¹⁰ ICM interviewed a random sample of 20,258 adults ages 18-64 in twenty countries across the world through online interviewing between 17th July – 11th August 2014. Surveys were conducted across each country and the results have been weighted to the profile of all adults. ICM is a member of the British Polling Council and abides by its rules. Further information at ¹¹ NHS Choices. Pulmonary Embolism – Symptoms. July 2015. ¹² Turpie AGG et al. BMJ. 2002; 325: 887-890. ¹³ CDC. Venous Thromboembolism (Blood Clots). Data & Statistics. June 2015.