I was reading some things on quitting smoking and remebered a couple people in here were diagnosed with thyroid problems shortly after they quit smoking.
"In a poll I conducted with almost 1000 thyroid patients, 11 percent of the respondents were diagnosed with thyroid disease within 3 months of quitting smoking. And 18% were diagnosed within 6 months of quitting smoking. " ~ Smoking and Thyroid Disease: Exploration of the Connections / Thyroid Disease Information Source - Articles/FAQs
So it does look like smoking may mask the symptoms of thyroid problems.
"In a poll I conducted with almost 1000 thyroid patients, 11 percent of the respondents were diagnosed with thyroid disease within 3 months of quitting smoking. And 18% were diagnosed within 6 months of quitting smoking. " ~ Smoking and Thyroid Disease: Exploration of the Connections / Thyroid Disease Information Source - Articles/FAQs
So it does look like smoking may mask the symptoms of thyroid problems.