Association between lifestyle factors and thyroid function in young euthyroid adults

Purpose The present work examines the associations of dietary habits, sedentarism, physical activity (PA) levels and sleep with thyroid function in young euthyroid adults. Methods A total 105 adults participated this cross-sectional study. Thyroid was determined fasting conditions (> 6 h). Dietary habits were measured by a food frequency questionnaire three non-consecutive 24 h recalls, different intake patterns then estimated. time spent sedentary, PA objectively using wrist-worn accelerometer. Results Energy carbohydrate positively associated stimulating hormone (TSH) (β = 0.222; R2 0.102; P 0.022 β 0.425; 0.129; 0.007, respectively) whereas fat negatively TSH −0.428; 0.137; 0.004). also free triiodothyronine 0.277; Further, adherence to Mediterranean diet related thyroxine (FT4) −0.221; 0.113; 0.020 −0.268; 0.071; respectively). Vigorous-intensity overall FT4 −0.227; 0.052; −0.204; 0.042; 0.041, In contrast, no found between parameters function. Conclusions Lifestyle factors such as seems be