The Institute for the Study and Education in Thrombosis and Antithrombotic Treatment (IMETHA) is a Greek organization focused on improving understanding of thrombosis and its prevention. Through its World Thrombosis Day initiative, observed on October 13, the institute raises awareness of the health risks associated with blood clots and encourages people to recognize warning signs and risk factors.

IMETHA provides educational information for the public and healthcare professionals on thrombosis, venous thromboembolism, hospital-related risks, and atrial fibrillation. Its resources explain how clots can form in veins or arteries, the potential consequences of deep vein thrombosis and pulmonary embolism, and why hospitalization can increase the risk of venous thromboembolism. The website also offers campaign materials, scientific research and sources, frequently asked questions, and guidance for patients and healthcare providers.

Alongside online education, the institute invites individuals and organizations to participate in awareness activities, share campaign messages, and support efforts to prevent avoidable harm. Its work aims to make reliable information accessible and encourage wider public engagement with thrombosis prevention.