Interaction Effect of the Mediterranean Diet and an Obesity Genetic Risk Score on Adiposity and Metabolic Syndrome in Adolescents: The HELENA Study Seral Cortes, Miguel Molina Hidalgo, Cristina Metabolic syndrome Mediterranean diet Genetic risk score Helena Adolescents Sex Obesity and metabolic syndrome (MetS) are worldwide major health challenges. The Mediterranean diet (MD) is associated with a better cardiometabolic profile, but these beneficial e ects may be influenced by genetic variations, modulating the predisposition to obesity or MetS. The aim was to assess whether interaction e ects occur between an obesity genetic risk score (obesity-GRS) and the MD on adiposity and MetS in European adolescents. Multiple linear regression models were used to assess the interaction e ects of an obesity-GRS and the MD on adiposity and MetS and its components. Interaction e ects between theMDon adiposity and MetS were observed in both sex groups (p < 0.05). However, those interaction e ects were only expressed in a certain number of adolescents, when a limited number of risk alleles were present. Regarding adiposity, a total of 51.1% males and 98.7% females had lower body mass index (BMI) as a result of higher MD adherence. Concerning MetS, only 9.9% of males with higher MD adherence had lower MetS scores. However, the same e ect was observed in 95.2% of females. In conclusion, obesity-related genotypes could modulate the relationship between MD adherence and adiposity and MetS in European adolescents; the interaction e ect was higher in females than in males. 2021-02-10T09:46:01Z 2021-02-10T09:46:01Z 2020-12-16 info:eu-repo/semantics/article Seral-Cortes, M., Sabroso-Lasa, S., Miguel-Etayo, D., Gonzalez-Gross, M., Gesteiro, E., Molina-Hidalgo, C., ... & Labayen, I. (2020). Interaction Effect of the Mediterranean Diet and an Obesity Genetic Risk Score on Adiposity and Metabolic Syndrome in Adolescents: The HELENA Study. Nutrients, 12(12), 3841. [doi:10.3390/nu12123841] http://hdl.handle.net/10481/66427 10.3390/nu12123841 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess AtribuciĆ³n 3.0 EspaƱa Mdpi