Every 6 seconds, someone dies from a condition related to thrombosis. That’s right — 1 in 4 people worldwide die due to blood clots. But this is preventable. That’s why the World Thrombosis Day (WTD) campaign needs YOU.

What Is World Thrombosis Day?

Held every year on October 13, World Thrombosis Day is a global movement to shine a spotlight on the often-overlooked condition of thrombosis — the formation of dangerous blood clots in veins and arteries that can lead to heart attacks, strokes, pulmonary embolisms (PE), and deep vein thrombosis (DVT).

Why It Matters

Blood clots don’t discriminate. They affect people of all ages, races and genders. Many don’t even know they’re at risk until it’s too late.

• 70% of hospital-acquired clots are preventable

• More people die from blood clots than from AIDS, breast cancer, and motor vehicle crashes combined

• Venous thromboembolism (VTE) is the leading cause of preventable hospital death

Together, we can change this.

You Have the Power to Make a Difference

Whether you’re a health organization, school, patient advocate, workplace, student, or just someone who cares — there’s a place for you in this movement.

When you join the World Thrombosis Day campaign, you become part of a global network of more than 7,000 partners in over 120 countries. You help raise awareness, spark conversations and save lives.

How to Get Involved

1. Become an Official Partner

Sign up as a World Thrombosis Day partner and get access to exclusive resources, including event toolkits, social media graphics, fact sheets and promotional materials.

2. Host or Join an Event

Plan a walk, hold a webinar, light up a landmark in red, or even host a clot-busting bake sale! Big or small, every action matters.

3. Take the #HeadToToeChallenge

Our signature campaign challenge gets people moving and raises awareness from head to toe – literally! Get creative, post your photos or videos and tag #WTDay25 and #HeadToToeChallenge.

4. Spread the Word Online

Use your social media superpowers for good. Share key facts, personal stories, and campaign messages to educate your community.

5. Honor a Loved One

Create a tribute, share a story or dedicate an event to someone impacted by thrombosis.