Journal
PSYCHONEUROENDOCRINOLOGY
Volume 37, Issue 8, Pages 1191-1198Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.psyneuen.2011.12.009
Keywords
Autoimmune thyroid disease; Hashimoto's hypothyroidism; Graves' hyperthyroidism; TPO antibodies; Stress; Life events; Daily hassles; Mood
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Funding
- Dutch Medical Research Council [NWO 950-10-626]
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Background: An association between stress and autoimmune thyroid disease (AITD) (especially Graves' hyperthyroidism) has been reported, but all studies so far on this topic have been retrospective. Objective: To evaluate prospectively the relationship between stress and (i) de novo occurrence of thyroid antibodies and (ii) development of overt autoimmune hyper-/hypothyroidism. Study design: Two nested case-control studies in a prospective cohort of 790 euthyroid women who were 1st or 2nd degree relatives of AITD patients. Follow-up was five year, with annual assessments including questionnaires on stressful life events, daily hassles, and mood. In study A, cases were subjects who developed TPO-Ab but remained euthyroid during follow-up (called event). In study B, cases were subjects who developed overt hypothyroidism (TSH > 5.7 mU/l and FT4 < 9.3 pmol/l) or overt hyperthyroidism (TSH < 0.4 mU/l and FT4 > 20.1 pmol/l) during follow-up (called event). For each case, two controls were selected, matched for age and duration of follow-up; controls in study A remained TPO-Ab negative, and in study 8 remained without overt hyper-/hypothyroidism. Outcomes: Contrast in questionnaire responses between cases and controls at baseline, at one year prior to the event and at time of event. Results: Exposure to stress was not different between subjects who developed or did not develop TPO-Ab (study A). No differences were observed in stress questionnaires between hyper-/hypothyroid cases and controls at any time point, but hypothyroid cases had less negative feelings than controls at the time of diagnosis (study B). Conclusion: The data suggest that stress is not involved in the pathogenesis of AITD. (C) 2012 Elsevier Ltd. All rights reserved.
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