This paper shows that ulcerative colitis increases the requirement for thyroxine. Downloadable.
Front. Endocrinol. | doi: 10.3389/fendo.2019.00233
ULCERATIVE COLITIS AS A NOVEL CAUSE OF INCREASED NEED FOR LEVOTHYROXINE
Camilla Virili, Ilaria Stramazzo, Maria G. Santaguida, Giovanni Bruno, Nunzia Brusca, Silvia Capriello, Miriam Cellini, Carola Severi, Lucilla Gargano and Marco Centanni
Probably ths appplies to all coeliac diseases.