World Thrombosis Day 2025

Every year on 13 October, the world comes together to raise awareness of thrombosis, the formation of potentially life-threatening blood clots. World Thrombosis Day (WTD) shines a light on a condition that is often misunderstood or overlooked yet affects millions of people around the globe.

Thrombosis can occur at any age, and in many cases, it’s preventable. That’s why the campaign encourages individuals, healthcare professionals, and organisations to help spread awareness about the signs, risks, and prevention of blood clots.

What is Thrombosis?

Thrombosis happens when a blood clot (thrombus) forms inside a blood vessel and blocks normal blood flow. It can occur in either veins or arteries, known as venous thrombosis and arterial thrombosis.

Venous thrombosis includes deep vein thrombosis (DVT), which usually develops in the deep veins of the leg, and pulmonary embolism (PE), when a clot travels to the lungs.
 Arterial thrombosis occurs when a clot forms in an artery, which can lead to a heart attack or stroke.

Why the 2025 Theme Matters

This year’s theme, From Head to Toe, Take Control: Prevent Thrombosis, Protect Your Health, highlights that blood clots can affect the entire body and are linked to other chronic conditions such as heart disease, cancer, diabetes, and obesity.

The message encourages people to take charge of their health and recognise that preventing blood clots is not just about one part of the body but about overall wellbeing.

Why Awareness Is So Important

According to the World Thrombosis Day campaign, one in four people worldwide dies from conditions caused by thrombosis. Many of these cases can be prevented through awareness, early detection, and simple lifestyle choices.

Understanding the symptoms helps people act quickly and seek medical help when needed. Staying active, drinking enough water, and learning your personal risk factors can make a real difference.

How You Can Take Action

• Learn the signs and risk factors. Be aware of symptoms like swelling, pain, or redness in a limb (for DVT) and sudden breathlessness or chest pain (for PE).
• Keep moving. Stay active during long travel or sedentary periods.
• Talk to your healthcare provider. If you have conditions that increase your risk, such as cancer, obesity, or a family history of clots, ask about preventive options.
• Share what you learn. Help spread awareness of thrombosis and support trusted campaigns like WTD.

This blog is inspired by World Thrombosis Day and its mission to raise global awareness of blood clots. Visit the official website to explore educational materials and see how others are supporting the cause at worldthrombosisday.org.