Hi! I had my thyroid removed 45 days ago. I was trainning for triathlon and I would like to start trainning again. My trainner is afraid I might have some heart problems because I had my thyroid removed, eventhough my endocrinologist allow me to get back to my normal life. Is there any athlete here in this Community who went through a complete thyroid removal? does this affects his endurance? should I see a cardiologist? Thanks!!!