By Priyanjana Pramanik, MSc. Reviewed by Susha Cheriyedath, M.Sc. Sep 16 2025 A large UK study reveals that while a nutrient-rich diet may enhance happiness and purpose in later life, its benefits intertwine with mood, health, and wealth. Study: Dietary intake of fruits and vegetables, polyunsaturated fats, and fish and positive psychological well-being in older adults: A cross-sectional analysis of the English Longitudinal Study of Ageing (ELSA) . Image Credit: gorillaimages  / Shutterstock In