Charlotte – October 13, 2026 -- Women are being urged to discuss their personal blood clot risk with a healthcare professional this World Thrombosis Day, October 13, as a global campaign focuses on how that risk shifts across a woman's life.
One in four deaths worldwide stems from thrombosis-related conditions
One in four people worldwide die from conditions caused by thrombosis, yet blood clots remain among the most overlooked and misunderstood serious health threats. Thousands of partners are joining the campaign to raise awareness of warning signs, risk factors and the importance of timely care. The movement is led by the International Society on Thrombosis and Haemostasis (ISTH), whose community includes more than 21,000 thrombosis professionals, advocates and partners.
Pregnancy makes a blood clot about five times more likely
This year's campaign traces risk through reproductive health, pregnancy, the postpartum period, perimenopause and menopause. Hormonal changes, hormonal medications, surgery and periods of limited mobility can all influence a woman's risk. During pregnancy, women are approximately five times more likely to develop a blood clot, and the risk stays elevated after delivery.
Up to 60% of venous clots occur around hospital stays
Up to 60% of venous thromboembolism (VTE) cases occur during or within 90 days of hospitalization. Preventive measures matter before, during and after hospital care.
Campaign chair James Douketis, M.D., said the goal is to help women understand that their risk evolves over time and that awareness, risk assessment and timely action can make a difference.
The campaign also asks communities to help women recognize the signs and symptoms of blood clots and know when to seek medical care. Educational resources and shareable materials are available on the World Thrombosis Day website.