Objective: The study aim was to investigate the relationship of life–style habits and Hashimoto thyroiditis with hypothyreosis in women.

Methods: All women who had check–ups in our institution during a three–month period were assessed for Hashimoto thyroiditis with hypothyreosis. Women were also asked for life–style habits (smoking, drinking coffee and alcohol). Patients were divided into the study group with and the healthy control without hypothyreosis. 

Results: Study included 267 women out of which 89 (33.3%) had Hashimoto thyroiditis with hypothyreosis. Significantly more women who drank coffee (p=0.048) and alcohol (p=0.044) had autoimmune hypothyreosis (coffee OR=1.9; alcohol OR=1.62). Leading bad/unhealthy life–style was correlated with having Hashimoto thyroiditis (p=0.029). Conversely, there were no other significant associations between autoimmune hypothyreosis and frequency and amount as well as type of alcohol drinks or smoking tobacco.   

Conclusions: Consummation of alcohol and coffee as well as leading bad/unhealthy life–style can negatively impact thyroid gland functioning.