I am a fan of Dr. Chandler Marrs, PhD, (Hormones Matter) and the research she is doing and has done. This is from a recent newsletter. PR
"Over the last few years, it has become increasingly clear that there is a connection between medication and vaccine reactions and thyroid damage. It doesn't seem to matter which medication or vaccine, but more often than not, if an individual has a reaction to that drug, the thyroid will suffer damage. We don't know why the thyroid is targeted or whether those who experience adverse reactions had pre-existing but unrecognized disease before suffering from the adverse drug reaction, but we do know, that thyroid damage is very common these cohorts of people. Here are some articles on what we've learned so far."