RT Journal Article T1 Mediterranean Diet and Telomere Length: A Systematic Review and Meta-Analysis. A1 Canudas, Silvia A1 Becerra-Tomas, Nerea A1 Hernandez-Alonso, Pablo A1 Galie, Serena A1 Leung, Cindy A1 Crous-Bou, Marta A1 De Vivo, Immaculata A1 Gao, Yawen A1 Gu, Yian A1 Meinilä, Jelena A1 Milte, Catherine A1 García-Calzon, Sonia A1 Marti, Amelia A1 Boccardi, Virginia A1 Ventura-Marra, Melissa A1 Salas-Salvado, Jordi K1 Mediterranean diet K1 Accelerated telomere shortening K1 Age-associated diseases K1 Dietary pattern K1 Healthy aging K1 Telomere length AB Accelerated telomere shortening has been associated with several age-related diseases and/or decreased lifespan in humans. The Mediterranean diet (MedDiet) is considered to be 1 of the most recognized diets for disease prevention and healthy aging, partially due to its demonstrated anti-inflammatory and antioxidative properties which may impact on telomere length (TL). The aim of this meta-analysis was to determine the associations between MedDiet adherence and TL maintenance. MEDLINE-PubMed and Cochrane databases were searched up to December 2018 for studies evaluating the association between MedDiet adherence and TL in blood cells. Two reviewers, working independently, screened all titles and abstracts to identify studies that met the inclusion criteria [cross-sectional, case-control, and prospective cohort studies and randomized clinical trials (RCTs) published in English and excluded nonoriginal articles]. Data were pooled by the generic inverse variance method using the random effects model and expressed as standardized mean difference (SMD). Heterogeneity was identified using the Cochran Q test and quantified by the I2 statistic. A total of 8 original cross-sectional studies were included for the quantitative meta-analysis, comprising a total of 13,733 participants from 5 countries. A positive association between adherence to the MedDiet and TL was observed in all meta-analyses, with the exception of those conducted only in men: SMD (95% CI) of 0.130 (0.029; 0.231) for all subjects, 0.078 (0.005; 0.152) for women, and 0.095 (-0.005; 0.195) for men. Only 1 prospective cohort study and 1 RCT were identified, therefore, we could not undertake a meta-analysis for these study designs. The present meta-analysis of cross-sectional studies demonstrates that higher MedDiet adherence is associated with longer TL. At the same time, larger and high-quality prospective studies and clinical trials are warranted to confirm this association. PB Elsevier YR 2020 FD 2020 LK http://hdl.handle.net/10668/16028 UL http://hdl.handle.net/10668/16028 LA en NO Canudas S, Becerra-Tomás N, Hernández-Alonso P, Galié S, Leung C, Crous-Bou M, De Vivo I, et al. Mediterranean Diet and Telomere Length: A Systematic Review and Meta-Analysis. Adv Nutr. 2020 Nov 16;11(6):1544-1554 DS RISalud RD May 11, 2025