open access

Vol 65, No 1 (2014)
Review article
Published online: 2014-02-19
Submitted: 2014-02-19
Accepted: 2014-02-19
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Influence of cigarette smoking on thyroid gland — an update

Nadia Sawicka-Gutaj, Paweł Gutaj, Jerzy Sowiński, Ewa Wender-Ożegowska, Agata Czarnywojtek, Jacek Brązert, Marek Ruchała
DOI: 10.5603/EP.2014.0008
·
Endokrynologia Polska 2014;65(1):54-62.

open access

Vol 65, No 1 (2014)
Review article
Published online: 2014-02-19
Submitted: 2014-02-19
Accepted: 2014-02-19

Abstract

Many studies have shown that cigarette smoking exerts multiple effects on the thyroid gland. Smoking seems to induce changes in thyroid function tests, like decrease in TSH and increase in thyroid hormones. However, these alterations are usually mild. In addition, tobacco smoking may also play a role in thyroid autoimmunity. Many studies have confirmed a significant influence of smoking on Graves’ hyperthyroidism and particularly on Graves’ orbitopathy. Here, smoking may increase the risk of disease development, may reduce the effectiveness of treatment, and eventually induce relapse. The role of smoking in Hashimoto’s thyroiditis is not as well established as in Graves’ disease. Nonetheless, lower prevalence of thyroglobulin antibodies, thyroperoxidase antibiodies and hypothyroidism were found in smokers. These findings contrast with a study that reported increased risk of hypothyroidism in smokers with Hashimoto’s thyroiditis. Moreover, cigarette smoking increases the incidence of multinodular goitre, especially in iodine-deficient areas. Some studies have examined cigarette smoking in relation to the risk of thyroid cancer. Interestingly, many of them have shown that smoking may reduce the risk of differentiated thyroid cancer. Furthermore, both active and passive smoking during pregnancy might modify maternal and foetal thyroid function. This review evaluates the current data concerning the influence of cigarette smoking on thyroid gland, including hormonal changes, autoimmunity and selected diseases. These findings, however, in our opinion, should be carefully evaluated and some of them are not totally evidence-based. Further studies are required to explain the effects of smoking upon thyroid pathophysiology. (Endokrynol Pol 2014; 65 (1): 54–62)

Abstract

Many studies have shown that cigarette smoking exerts multiple effects on the thyroid gland. Smoking seems to induce changes in thyroid function tests, like decrease in TSH and increase in thyroid hormones. However, these alterations are usually mild. In addition, tobacco smoking may also play a role in thyroid autoimmunity. Many studies have confirmed a significant influence of smoking on Graves’ hyperthyroidism and particularly on Graves’ orbitopathy. Here, smoking may increase the risk of disease development, may reduce the effectiveness of treatment, and eventually induce relapse. The role of smoking in Hashimoto’s thyroiditis is not as well established as in Graves’ disease. Nonetheless, lower prevalence of thyroglobulin antibodies, thyroperoxidase antibiodies and hypothyroidism were found in smokers. These findings contrast with a study that reported increased risk of hypothyroidism in smokers with Hashimoto’s thyroiditis. Moreover, cigarette smoking increases the incidence of multinodular goitre, especially in iodine-deficient areas. Some studies have examined cigarette smoking in relation to the risk of thyroid cancer. Interestingly, many of them have shown that smoking may reduce the risk of differentiated thyroid cancer. Furthermore, both active and passive smoking during pregnancy might modify maternal and foetal thyroid function. This review evaluates the current data concerning the influence of cigarette smoking on thyroid gland, including hormonal changes, autoimmunity and selected diseases. These findings, however, in our opinion, should be carefully evaluated and some of them are not totally evidence-based. Further studies are required to explain the effects of smoking upon thyroid pathophysiology. (Endokrynol Pol 2014; 65 (1): 54–62)

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Keywords

thyroid; smoking; tobacco; nicotine; thyroid hormones; TSH; TSH receptor autoantibodies; Graves’ disease; Hashimoto’s thyroiditis; postpartum thyroiditis

About this article
Title

Influence of cigarette smoking on thyroid gland — an update

Journal

Endokrynologia Polska

Issue

Vol 65, No 1 (2014)

Pages

54-62

Published online

2014-02-19

DOI

10.5603/EP.2014.0008

Bibliographic record

Endokrynologia Polska 2014;65(1):54-62.

Keywords

thyroid
smoking
tobacco
nicotine
thyroid hormones
TSH
TSH receptor autoantibodies
Graves’ disease
Hashimoto’s thyroiditis
postpartum thyroiditis

Authors

Nadia Sawicka-Gutaj
Paweł Gutaj
Jerzy Sowiński
Ewa Wender-Ożegowska
Agata Czarnywojtek
Jacek Brązert
Marek Ruchała

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