Welcome in....I cannot say it is a not a cause but can say that smoking does play a role in metabolism. Are you taking a Thyroid medication such as Levothyroxin, Thyrolar and Syn
throid? I can also say that smoking cessation will cause the thyroid hormone production to change and actually fluctuate for a period of time until it stabilizes.
That said, I doubt that the use of E cigs will be a cause. The E liquids used rapidly metabolize and are out of the system rather fast giving any residual very little time to be in the bloodstream to have any or little impact on Thyroid function.
Do...relay this info on to your Physician and allow him or her monitor your T cell levels along with an idea of how much
vaping is done along with the type of juices vaped. He or she may suggest not
vaping for a trial period to rule any suspicion of it having any impact.
The best way to get a handle on this is to stop all use and get the Thyroid levels stabilized with medication then return to usage, then again in 90 days get another blood test to see if the use has any impact.
Good luck!