WHAT'S ARE SOME OF THE CAUSES OF BLOCKED FALLOPIAN TUBES? Blocked fallopian tubes, a common cause of female infɛrtility, are primarily caused by pelvic inflammatory dise@se (PID), endometriosis, and past surgeries, including ectopic pregnancies and tubal ligations These conditions can lead to scarring and adhesions that obstruct the tubes, preventing the egg and spɛrm from meeting. ELABORATION: Pelvic Inflammatory Disease (PID): PID is an infɛctions of the reproductive organs, often caused by sɛ