Yes, thinning eyelashes and eyebrows is thyroid related, however if it started after the meds then it may be med related. I have heard many people complain of weight gain and hair loss while on synthroid, I have a friend that said she gained weight and lost a lot of hair till she switched to another brand. Also when I was getting bloodwork done once the lab tech commented that synthroid causes hair loss moreso than other brands.
It may be your body adjusting or it may be that you need a med change, there may be something in synthroid that doesn't agree with your body.
[This message has been edited by dea4 (edited 07-29-2003).]