Association between lifestyle factors and thyroid function in young euthyroid adults
MetadataShow full item record
AuthorMerchán Ramírez, Elisa; Sanchez‑Delgado, Guillermo; Jurado Fasoli, Lucas; Acosta Manzano, Francisco Miguel; Muñoz Torres, Manuel Eduardo; Llamas Elvira, José Manuel; Ruiz Ruiz, Jonatan
Tsinghua University Press
Thyroid hormonesDietary intakeSleepPhysical activityEuthyroid
E. Merchan-Ramirez et al. / Food Science and Human Wellness 13 (2024) 265-275 [http://doi.org/10.26599/FSHW.2022.9250022]
SponsorshipSpanish Ministry of Economy and Competitiveness via the Fondo de Investigación Sanitaria del Instituto de Salud Carlos III (PI13/01393); Retos de la Sociedad program (DEP2016-79512-R); European Regional Development Funds (ERDF); Spanish Ministry of Education (FPU13/04365 and FPU19/01609); Fundación Iberoamericana de Nutrición (FINUT); Redes Temáticas de Investigación Cooperativa RETIC (Red SAMID RD16/0022); AstraZeneca HealthCare Foundation; University of Granada Plan Propio de Investigación 2016-Excellence actions: Unit of Excellence on Exercise and Health (UCEES)-and Plan Propio de Investigación 2018-the Programa Contratos-Puente and Contratos Perfeccionamiento de Doctores; Junta de Andalucía, Consejería de Conocimiento, Investigación y Universidades (ERDF; ref. SOMM17/6107/UGR); Fundación Alfonso Martín Escudero
Purpose The present work examines the associations of dietary habits, sedentarism, physical activity (PA) levels and sleep habits, with thyroid function in young euthyroid adults. Methods A total of 105 young euthyroid adults participated in this cross-sectional study. Thyroid function was determined in fasting conditions (> 6 h). Dietary habits were measured by a food frequency questionnaire and three non-consecutive 24 h recalls, and different dietary intake and patterns were then estimated. The time spent in sedentary, PA levels and sleep habits were objectively measured using a wrist-worn accelerometer. Results Energy and carbohydrate intake were positively associated with thyroid stimulating hormone (TSH) (β = 0.222; R2 = 0.102; P = 0.022 and β = 0.425; R2 = 0.129; P = 0.007, respectively) whereas fat intake was negatively associated with TSH (β = −0.428; R2 = 0.137; P = 0.004). Energy intake was also positively associated with free triiodothyronine (β = 0.277; R2 = 0.137; P = 0.004). Further, adherence to the Mediterranean diet was negatively related to TSH and free thyroxine (FT4) (β = −0.221; R2 = 0.113; P = 0.020 and β = −0.268; R2 = 0.071; P = 0.007, respectively). Vigorous-intensity and overall PA were negatively associated with FT4 (β = −0.227; R2 = 0.052; P = 0.022 and β = −0.204; R2 = 0.042; P = 0.041, respectively). In contrast, no associations were found between sleep parameters and thyroid function. Conclusions Lifestyle factors such as dietary intake and PA levels seems to be related to thyroid function even in young euthyroid adults.