Smoke exposure is associated with a lower prevalence of serum thyroid autoantibodies and thyrotropin concentration elevation and a higher prevalence of mild thyrotropin concentration suppression in the third national health and nutrition examination survey (NHANES III). - Belin,R.M.; Astor,B.C.; Powe,N.R.; Ladenson,P.W. (J Clin Endocrinol Metab, 2004)