The Foundation of Longevity Through Diet Research consistently shows that what we eat plays a crucial role in our lifespan. While food and beverages China  have traditionally emphasized balance and medicinal properties, modern nutritional science confirms many of these ancient wisdom-based practices. Nutrient-Rich Foods That Promote Longevity Leafy Greens and Vegetables Dark leafy greens like spinach, kale, and collard greens are full of antioxidants and important nutrients.