RT Journal Article T1 Serum Selenium and Incident Cardiovascular Disease in the PREvención con DIeta MEDiterránea (PREDIMED) Trial: Nested Case-Control Study. A1 Gutiérrez-Bedmar, Mario A1 Gil, Fernando A1 Olmedo, Pablo A1 Ruiz-Canela, Miguel A1 Martínez-González, Miguel Ángel A1 Salas-Salvadó, Jordi A1 Babio, Nancy A1 Fitó, Montserrat A1 Del Val García, Jose Luís A1 Corella, Dolores A1 Sorlí, José V A1 Ros, Emilio A1 Fiol, Miquel A1 Estruch, Ramón A1 Santos-Lozano, José Manuel A1 Arós, Fernando A1 Serra-Majem, Lluís A1 Pintó, Xavier A1 Gómez-Gracia, Enrique A1 Muñoz-Bravo, Carlos K1 PREDIMED K1 cardiovascular disease K1 mediterranean diet K1 older populations K1 serum selenium AB Background: Selenium is an essential trace mineral with potential interest for cardiovascular disease (CVD) prevention owing to its antioxidant properties. Epidemiological data on selenium status and CVD remain inconsistent. The objective of this study was to ascertain whether low serum selenium (SSe) concentrations are related to an increased risk of a first CVD event in a population at high cardiovascular risk. Methods: We undertook a case-control study nested within the “PREvención con DIeta MEDiterránea” (PREDIMED) trial. A total of 207 participants diagnosed with CVD (myocardial infarction, stroke, or cardiovascular death) during the follow-up period (2003−2010) were matched by sex, age, and intervention group to 436 controls by incidence density sampling. Median time between serum sample collection and subsequent CVD event occurrence was 0.94 years. SSe levels were determined using inductively coupled plasma mass spectrometry analysis. Covariates were assessed through validated questionnaires, in-person interviews, and medical record reviews. Conditional logistic regression was used to calculate multivariable-adjusted odds ratios (ORs). Results: Among women, the mean SSe concentration was lower in cases than in controls (98.5 μg/L vs. 103.8 μg/L; p = 0.016). In controls, SSe levels were directly associated with percentage of total energy intake from proteins and fish intake (p for linear trend SN 2077-0383 YR 2022 FD 2022-11-10 LK http://hdl.handle.net/10668/21362 UL http://hdl.handle.net/10668/21362 LA en DS RISalud RD Apr 17, 2025