<prompt> Thromboembolism is due to which component of OCPProgesteroneEstrogenIronFSH  <response>: Ans. is b i.e., Estrogen o Estrogen is responsible for venous thromboembolism, i.e. leg vein and pulmonary thrombosis. o Both estrogen and progesterone are responsible for aerial phenomena, i.e. coronary, and cerebral thrombosis --- MI and stroke 