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Stop What You Are Doing Because We Need To Talk About World Thrombosis Day


13 October is World Thrombosis Day (WTD). Woohoo! If you happen to be a human being, you should probably take note.

First up: What actually is thrombosis?

Thrombosis – also known as a blood clot – is the underlying cause of the world’s top three cardiovascular killers: heart attack, stroke, and venous thromboembolism (VTE),¹ so we’d say it’s pretty important you keep reading to learn more…

But, like, why does it need a day dedicated to it?

Because thrombosis is a huge problem! HUGE. One in four deaths worldwide are related to the condition.²

When was the first WTD?

Good question! The first WTD was in 2014, so it's still a very young movement.

This is why it’s so important the message about WTD is spread to as many people as possible. For example, did you know on average every 37 seconds someone in the Western world dies from VTE?³

You were paying attention, right?

What on earth happens on WTD?

What am I supposed to do on WTD?

Visit, where you can learn more about thrombosis.

For example, did you know that sitting for more than 90 minutes can reduce the blood flow behind the knee by half, increasing your risk of a blood clot in the leg?⁴

PE and DVT both have signs and symptoms.⁵ ⁶ It only takes a matter of seconds to learn them.

“OK, I’m definitely interested. But can you give me three more reasons why I should be interested in WTD?”

You drive a hard bargain, but fine! How about…

Reason 1:

Reason 2:

Reason 3:

Making time to get up and move regularly can help to get the blood flowing and potentially reduce the risk of DVT.

So join us in helping raise awareness of blood clots on World Thrombosis Day. This 13 October, learn more about how you can help reduce the risk of DVT and PE @Time2Move and at

¹ Naess IA et al. Thromb Haemost. 2007; 5(4):692-699
² Raskob G et al. Arteriosclerosis, Thrombosis, and Vascular Biology, November 2014:34(11):2363-71
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 Thrombosis UK:The Thrombosis Charity. Reducing the risk of e-thrombosis. February 2013
⁵ Turpie AGG et al. BMJ. 2002; 325: 887-890
⁶ NHS Choices. Causes of deep vein thrombosis. June 2015
⁷ ICM interviewed a random sample of 20,258 with adults aged 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
⁸ Kearon C. Circulation. 2003;107,(23 Suppl 1)I22-I30