NASA Forms Working Group to Assess Blood Clot Risk in Astronauts

NASA's Office of the Chief Health and Medical Officer launched a working group in April 2026 to address the risk of venous thromboembolism (VTE) among astronauts. The group was established to review updated VTE case data and newly gathered information indicating altered blood flow patterns in a cohort of astronauts. The initiative also aims to evaluate ongoing research and clinical efforts designed to reduce clot-related risks during spaceflight. Developing a standardized VTE risk-scoring algorithm for astronauts is a key goal of this effort.
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