Recent research published in BMJ Nutrition, Prevention & Health indicates that calorie-restricted diets may be linked to a heightened risk of depression, particularly among individuals with overweight. The study analyzed data from over 25,000 participants, revealing that those on calorie-restricted diets scored higher on the PHQ-9 depression scale compared to non-dieters. Notably, participants following nutrient-restricted diets exhibited even greater increases in depression scores.
Experts in the field suggest that the psychological impact of dieting, which often involves labeling foods as "good" or "bad," can negatively affect self-esteem and emotional well-being. Dr. Ritu Goel, a psychiatrist, noted that the focus on weight and dietary restrictions can shape an individual's identity and lead to feelings of inadequacy. Similarly, therapist Rachel Goldberg highlighted that restrictive dieting can create a cycle of control and loss, leading to increased stress and emotional distress.
The study emphasizes that long-term weight management may be better achieved through a balanced diet rather than restrictive approaches. Registered dietitian Michelle Routhenstein advocates for mindful eating—paying attention to hunger and fullness cues—as a sustainable strategy. She advises against labeling foods and encourages choosing those that provide nourishment.
Additionally, certain foods high in omega-3 fatty acids, such as fatty fish, are believed to support mood and cognitive function. The findings of this study contribute to an ongoing discussion about the relationship between diet and mental health, calling for a balanced approach to eating rather than calorie restriction. While the study does not establish direct causation, it underscores the importance of considering mental health when adopting dietary changes.