Hair Loss Few Years After Hair Transplant

[Nish]

I had a hair transplant at the end of 2011 and the procedure went well and was done by a physician who is rated as one of the top ones on this site, so i have no issues with how the procedure was done or the physician's credibilities. I had a significant number of grafts placed in the front region of my head (over 3500) and my hair grew over the course of the 12-18 months cycle. It wasn't perfect, but it definitely had significant growth. Over the last couple years, the hair has significantly thinned out and neither the doctor or I can explain why. This past December I decided to do another hair transplant, so we will see how that goes.

Has anyone encountered anything like this? I actually just had some bloodwork done yesterday to make sure everything was working properly. All the normal blood work came back fine, but my doctor did an additional test for Thyroid Antibodies and they were slightly elevated, which could be a sign of something autoimmune. I'm wondering if there is any correlation between that and me losing transplanted hair.

Just trying to see if anyone has any information that would be helpful for me. Appreciate it in advance