My Name Is Debbie . I Am A Healthy 64

My name is Debbie . I am a healthy 64 yrs old as of my yearly exam just last month. Approx 28 yrs ago I was treated for severe graves disease with iodine. Since that time have been of course on medication. Hopefully, unrelated to the issue I am having now. Within the last month my hair has been falling out at a very noticeable rate. The only changes I have made is: I purchased hearing aids just over 1 month ago. Can they be having an effect on my hair loss?