09/10/2026
Blood clot risk can change throughout a woman’s life, and knowing when risk may be higher can help women take action.
The 2026 World Thrombosis Day campaign is putting a spotlight on the relationship between women’s health and thrombosis, including risk associated with hormonal changes, pregnancy, the postpartum period and menopause.
For example, pregnancy can increase the risk of blood clots approximately four- to five-fold, with risk remaining particularly elevated during the first six weeks after childbirth.
“Women’s health and blood clot risks are closely connected, but the relationship is often overlooked,” said James Douketis, M.D., Chair of the World Thrombosis Day campaign. “By bringing greater attention to blood clot risk across an individual's lifespan, we can help women and their healthcare professionals recognize important risk factors, understand when risk may be higher and take action to prevent serious complications.”
Recognized annually on October 13, brings together thousands of partners across 123 countries to increase awareness of blood clot risk factors, signs, symptoms and prevention.
This year, we’re encouraging women to know their personal risk, recognize changes throughout life and start conversations with their healthcare professionals.
🔗 Read the full announcement: https://bit.ly/4reiPAL