Could be that the iodoral is affecting your thyroid negatively (however you can't really know if you are losing more hair than usual) or that you have a vitamin deficiency. If you are truly balding, then it is most likely like male pattern baldness). If you are just losing hair but never seem to be quite balding...meaning your hair grows in small strands and then fall out, then that could mean another issue (thyroid/other hormonal or vitamin deficiency).