Core Viewpoint - The article emphasizes the importance of four specific food categories that can contribute to longevity and health, based on research linking dietary habits to lower mortality rates and environmental sustainability [2][3]. Group 1: Food Categories - Fruits are a cornerstone of both the Mediterranean and Planetary Health diets, providing essential nutrients like vitamins C and A, and antioxidants that support immune health and reduce inflammation [5][6]. - Dairy products, although less emphasized, are associated with longevity and include low-fat or non-fat options that are rich in calcium and vitamin D, crucial for bone health [7][8]. - Unsaturated fats from sources like olive oil and avocado oil are vital for maintaining healthy cholesterol levels and promoting brain health [9][10]. - Nuts are highlighted as a healthy snack option, rich in heart-healthy fats, fiber, and omega-3 fatty acids, contributing to overall health and longevity [10].