Researchers at the Research Institute of Sant Pau (IIB Sant Pau) and CIBER, led by Eugenia Mato of the Endocrinology, Diabetes and Nutrition Research Group and Joan Carles Escolà-Gil of the Risk Metabolic Basis Research Group Cardiovascular, have shown the role of cholesterol and one of its main metabolites, 27-hydroxycholesterol (27HC) in the growth of the thyroid tumor, as well as in its aggressiveness. The work has been published in Scientific Report.