In recent decades, an increasing body of research has highlighted significant scientific evidence linking adherence to the Mediterranean diet with a reduced risk of chronic diseases. Simultaneously, concerns about the environmental impact of the food system have intensified, particularly considering projected population growth in the coming years. This work introduces a new graphical representation of the traditional Mediterranean dietary model, developed by a dedicated Working Group of the Italian Society of Human Nutrition (SINU). This new model emphasizes plant-based foods, including fruits, vegetables, whole grains, legumes, and extra-virgin olive oil, at its foundation, reflecting their historical and scientific significance in the Mediterranean diet. Animal products, particularly red and processed meats, are de-emphasized, with dairy, white meats, and eggs recommended for moderate, weekly consumption. The pyramid also advocates limiting added sugars, salt, and alcohol to address their links with chronic diseases. Sustainability principles are woven into the framework, prioritizing local, seasonal, and minimally processed foods while discouraging food waste. The pyramid aligns with global recommendations from FAO and WHO, offering a comprehensive guide to adopting a healthy, sustainable dietary lifestyle while preserving cultural traditions and addressing contemporary nutritional and environmental challenges.