Exploring the Psychological Mechanisms for Sustaining Healthy Eating Behaviors Among the Elderly

Abstract

This study aimed to identify and explore the psychological mechanisms influencing the sustainability of healthy eating behaviors among elderly individuals in Tehran. Using a qualitative phenomenological approach, data were collected through semi-structured interviews with 26 elderly participants in Tehran until theoretical saturation was reached. Data were analyzed thematically using Nvivo software. Findings were categorized into three main themes: internal motivations and drivers (e.g., sense of responsibility toward family, enjoyment of vitality, health literacy), psychological barriers (e.g., long-standing habits, depression, cultural pressures), and psychological strategies for sustainability (e.g., self-monitoring, mindfulness, seeking social support). Results highlighted the complex interplay of cognitive, emotional, and social factors affecting elderly dietary behavior. The study emphasizes that fostering sustainable healthy eating behaviors among the elderly requires attention to psychological and social dimensions, and that medical advice alone is insufficient.