The Mediterranean diet as a metabolic strategy for healthy aging and non-communicable disease prevention

The Mediterranean diet (MD) is globally recognized for its protective role against chronic diseases, characterized by a predominantly plant-based eating pattern rich in fruits, vegetables, whole grains, olive oil, legumes, and nuts, with a moderate intake of fish and dairy. This review synthesizes recent evidence from cohort studies, randomized controlled trials, and systematic reviews examining the multidimensional health benefits of MD across the lifespan. Findings consistently demonstrate that adherence to MD is associated with reduced systemic inflammation, improved antioxidant status, and favorable modulation of cardiometabolic risk factors. In youth, particularly those with obesity, MD adherence improves lipid profiles, insulin sensitivity, and reduces the prevalence of metabolic syndrome. Among older adults, sustained adherence is linked to decreased all cause mortality. Emerging evidence from randomized trials further indicates that MD favorably alters gut microbiota composition by enhancing microbial diversity and abundance of beneficial taxa, correlating with improved glycemic control and reduced gastrointestinal discomfort. Overall, the Mediterranean diet exerts broad anti-inflammatory and metabolic benefits, supporting its promotion as a sustainable, evidence-based dietary model for disease prevention and healthy aging. Future research should refine mechanistic pathways and long-term adherence effects to strengthen clinical translation.