World Thrombosis Day

World Thrombosis Day From Head to Toe, Take Control. World Thrombosis Day is a global campaign of the ISTH that raises awareness of thrombosis on Oct. 13.
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Celebrated year round, World Thrombosis Day (WTD) is recognized on 13 October. WTD focuses attention on the often overlooked and misunderstood disease of thrombosis. With thousands of educational events in countries around the world, WTD and its partners place a global spotlight on thrombosis as an urgent and growing health problem. Bringing together communities around the world to , the quiet, underlying disorder that is the common mechanism of the world’s three top cardiovascular killers – heart attack, stroke and venous thromboembolism (VTE) – the International Society on Thrombosis and Haemostasis (ISTH) launched WTD in 2014. Partnering with thrombosis societies from every continent of the world, the ISTH teams up with continental cardiovascular, neurology and hematology organizations in the effort to educate the public, health care professionals and policy makers about thrombosis risks, prevention and treatment. More than 5,000 partners from every continent of the world have pledged their support to WTD, with more joining every day. For a list of those organizations and for those interested in making the pledge and joining the effort, visit www.worldthrombosisday.org. We invite you to participate! To join the movement now, visit: www.worldthrombosisday.org/join/. Supporter Disclosure: The WTD campaign is supported by the following organizations: BMS/Pfizer Alliance, Bayer, Cardinal Health, Inari Medical, Leo Pharma, Roche, AstraZeneca, Penumbra, Regeneron, Total CME, Urban Emu and Viatris

Photo Disclaimer: If you submit a photo through the WTD website or social media pages, you grant permission for the campaign to share the submitted photo on its website and/or in its yearly impact report. The campaign maintains all rights to images as they relate to the campaign, any distribution or use thereof. The campaign is not legally liable for any reproduction of images. If you have questions or wish to remove a photo, email us at wtd@isth.org.

01/16/2026

This is your friendly reminder that survivorship is strength in motion 💪🧘‍♀️

01/15/2026

Rowan Foundation Creative Writing Scholarships The Alexandra Rowan Voices of Tomorrow Scholarship and Alexandra Rowan Resilience in Writing Scholarship are designed to support women who aspire to become writers refine their craft and to ensure that Alexandra’s passion inspires generations to come....

01/14/2026

Not all blood clots are the same. There are two main types of thrombosis:
🟥 Arterial thrombosis: clots that form in arteries and can block blood flow to vital organs like the heart or brain.
🟦 Venous thrombosis: clots that form in veins, often in the legs, and can travel to the lungs.

Understanding the difference can help people recognize symptoms sooner and get the right care. Awareness saves lives. 💙Visit worldthrombosisday.org to learn more

📣Your voice can make a difference. Share your experience and help others recognize the signs of blood clots by submittin...
01/12/2026

📣Your voice can make a difference. Share your experience and help others recognize the signs of blood clots by submitting your 💙.

Submit your story here: https://bit.ly/47gPjSy

A blood clot may change a life,  but it does not define a future 💙. Drop a heart below if this resonates with you
01/09/2026

A blood clot may change a life, but it does not define a future 💙. Drop a heart below if this resonates with you

01/07/2026

Let's go back to the basics! What is thrombosis 🤔?

Thrombosis happens when a blood clot forms inside a blood vessel. This clot can slow down or block blood flow and when blood can’t move the way it should, -> it can lead to serious health problems.

Knowing the signs, understanding your risk, and getting care quickly can save lives. If something doesn’t feel right, trust your instincts and seek medical help. Visit worldthrombosisday.org to learn more

💊 If you’re prescribed blood thinners, every dose matters. Taking your medication exactly as directed helps prevent dang...
01/05/2026

💊 If you’re prescribed blood thinners, every dose matters. Taking your medication exactly as directed helps prevent dangerous blood clots and protects your health.

🚨If you have questions or side effects, talk with your care team, never stop or change your medication on your own.

Behind every blood clot statistic is a real person. Share your journey through   and help build a community rooted in aw...
01/02/2026

Behind every blood clot statistic is a real person. Share your journey through and help build a community rooted in awareness, understanding and hope. Get started here: bit.ly/47gPjSy

01/01/2026

Happy New Year from World Thrombosis Day!

This past year, our global community reached over 6 billion people with life-saving thrombosis education across 190+ countries.

To our partners, healthcare professionals, and advocates worldwide: thank you. Your dedication saves lives.

As we look ahead to World Thrombosis Day 2026 on October 13, we're committed to expanding our reach and impact.

Here's to a healthy, impactful 2026. Together, we make a difference. 🩸

We want to hear from you. 💬What do you want to learn more about when it comes to blood clots? Are there topics you think...
12/31/2025

We want to hear from you. 💬

What do you want to learn more about when it comes to blood clots? Are there topics you think need more awareness or better understanding? Share your thoughts below!

A healthier year starts with one change💙Quitting smoking can help lower your risk of blood clots and support better circ...
12/29/2025

A healthier year starts with one change💙

Quitting smoking can help lower your risk of blood clots and support better circulation. If it’s on your resolution list this year, you’re taking a powerful step toward protecting your health.

12/26/2025

🩺 Clot Classroom: Renal Vein Thrombosis (RVT). When a blood clot forms in the vein that drains blood from your kidney, it’s called renal vein thrombosis.

Think of it like a clogged pipe: when blood can’t flow out properly, your kidney can’t do its job of filtering and cleaning your blood.

💡 Did you know? In adults, RVT is often linked to nephrotic syndrome, where certain conditions can make the kidneys too “leaky.” Learning the signs helps you protect your health. Learn more here: bit.ly/4pUT7js

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