Comparing The Mediterranean and The Japanese Dietary Pattern in Relation to Longevity - A Narrative Review

The Mediterranean dietary pattern (MDP) and Japanese dietary pattern (JDP) have received increasing attention from the scientific community and media, predominantly due to their association with increased longevity and health. Although similarities between the two dietary patterns are evident, a detailed comparison between them is still relatively unexplored. This narrative review aimed to explore the similarities and differences between the MDP and JDP in terms of longevity while also reflecting on the adoption of these diets by other populations outside their regions of origin. Both dietary patterns are plant-based, minimally processed, and sustainable for their respective regions and have been shown to significantly prolong life expectancy in different populations. Nevertheless, these dietary patterns also differ in terms of macronutrient ratios, food preparation and consumption and individual cultural characteristics of each population. Additionally, both dietary patterns are part of broader lifestyle patterns, which include other behaviors, such as abstaining from smoking, engaging in regular physical activity, having low stress levels and a sense of community, spirituality/religiousness and purpose. The promotion of these two dietary patterns should be implemented in other regions after considering cultural and socio-economical characteristics.