I was recently prescribed synthriod for thyroiditis. I read the side effects list and I saw that fertility problems was a common side effect. I was wondering if this causes permanent damage to fertility or if it just suppresses fertility it while on it. Also I have noticed that I am hungry all the time, even after I eat a huge meal. I am normally not a big eater and I also dont want to gain an enormous amount of weight. If you have any other information about this med you would like to share I would be happy to hear it. thanks!