ABSTRACT
BACKGROUND: The Mediterranean dietary pattern (MDP) and Japanese dietary pattern (JDP) have received increasing attention from the scientific community and media because of their contribution to longevity and health. Although similarities between the two dietary patterns are evident, a detailed comparison between the MDP and the JDP has yet to be explored. AIMS: This narrative review aimed to explore the similarities and differences between the MDP and JDP regarding longevity while reflecting on the adoption of these diets by other populations outside their regions of origin. CONCLUSIONS: Both dietary patterns are plant-based, minimally processed, and sustainable for their respective regions and have been shown to significantly prolong life expectancy in populations. However, the dietary patterns also differ regarding macronutrient ratios, the specific foods consumed, and the individual cultural characteristics of each population. Additionally, both dietary patterns are part of broader lifestyle patterns, including other behaviors, like abstaining from smoking, engaging in regular physical activity, having low-stress levels, and a sense of community, spirituality/ religiousness, and purpose. Their promotion to other populations should be implemented after considering different perspectives, such as cultural and socioeconomical.
