🩸 World Thrombosis Day 2026: Recognise Blood Clot Warning Signs

Blood clots are an important health concern because they can sometimes block blood flow and lead to life-threatening complications. World Thrombosis Day, observed on 13 October, raises awareness about blood clot risks, early warning signs and prevention. The 2026 campaign places special emphasis on women’s health throughout life. Source: World Thrombosis Day

🩺 What Is Thrombosis?

Thrombosis occurs when a blood clot forms inside a blood vessel.

Two important types are:

• Deep vein thrombosis (DVT): A clot that develops in a deep vein, often in the leg.
• Pulmonary embolism (PE): A potentially life-threatening condition in which a clot travels to the lungs and blocks blood flow.

Blood clots can occur in different circumstances, and some develop without obvious symptoms.

🚨 Warning Signs You Should Never Ignore

Possible symptoms of a deep vein thrombosis include:

• Swelling in one leg or arm
• Pain or tenderness, often in the calf
• Warmth around the affected area
• Redness or a change in skin colour

These symptoms do not always mean a blood clot is present, but they require prompt medical assessment when a clot is suspected.

Seek emergency medical care immediately if you experience sudden shortness of breath, chest pain that may worsen when breathing, coughing up blood, fainting or severe dizziness. These can be signs of a pulmonary embolism.

👩 Why Blood Clot Awareness Matters for Women’s Health

Several factors can increase blood clot risk at different stages of life.

Examples include:

• Pregnancy and the weeks after childbirth
• Certain hormonal contraceptives
• Hormone therapy
• Major surgery or prolonged immobility
• Previous blood clots
• Some inherited clotting conditions

Having one of these factors does not mean a person will definitely develop a clot. Individual risk depends on several factors, so discuss personal concerns with a qualified healthcare professional.

Do not stop prescribed contraception or other medication without speaking to your clinician.

✈️ Can Long Journeys Increase Blood Clot Risk?

Sitting still for long periods, including during lengthy flights, car journeys or recovery after surgery, can increase the risk of a clot in some people.

Helpful measures include:

• Moving your legs regularly while seated.
• Getting up and walking when it is safe to do so.
• Avoiding unnecessary prolonged immobility.
• Following medical advice after surgery or during pregnancy.
• Asking a clinician about preventive measures if you have a history of blood clots or other risk factors.

People at increased risk may need individualised prevention advice. Do not take blood-thinning medication or aspirin for prevention unless a healthcare professional recommends it.

🥗 Can Lifestyle Habits Help?

Healthy habits support overall cardiovascular health, although they cannot eliminate every cause of thrombosis.

Try to:

• Stay physically active according to your ability.
• Avoid smoking.
• Maintain adequate hydration during normal daily activities and travel.
• Follow medical advice for existing health conditions.
• Attend recommended follow-up appointments.
• Discuss personal blood clot risks before major surgery or when starting hormone-related treatment.

There is no single food, drink or supplement that can reliably prevent all blood clots.

🩻 How Are Blood Clots Diagnosed and Treated?

Healthcare professionals assess symptoms, medical history and risk factors. Depending on the situation, tests may include blood tests and imaging, such as ultrasound or specialised scans.

Treatment may involve anticoagulant medicines, which help prevent clots from growing and reduce the risk of further clots. Some serious cases require additional emergency treatments.

The appropriate treatment depends on the location and severity of the clot and the patient’s medical condition.

🌿 Today’s Health Takeaway

Knowing the warning signs of blood clots can help people seek treatment sooner.

This World Thrombosis Day, learn about your risk factors, take sensible precautions during prolonged immobility and never ignore possible symptoms. Sudden breathing difficulties or chest pain require emergency assessment.

This article is for general health awareness and does not replace advice from a qualified healthcare professional.