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This paper introduces a personalized sustainable diet recommendation model that utilizes a constraint-aware decision-making framework to align individual dietary choices with sustainability goals. By incorporating learnable constraints rather than relying solely on user preferences, the model effectively addresses the challenge of inter-individual heterogeneity in dietary habits. Experimental results on the newly constructed SusDiet dataset, containing approximately 150,000 recipes, demonstrate that the approach encourages more sustainable food choices while respecting individual preferences, providing a valuable tool for future dietary interventions and policy-making.
Personalized diet recommendations can now promote sustainability without sacrificing individual preferences, thanks to a novel constraint-aware decision-making model.
A sustainable diet represents a multi-dimensional synergy among four essential pillars: nutrition adequacy, economic affordability, cultural acceptability, and environmental respect. Despite the prevalence of population-level sustainability modeling, practical implementation relies on effective individual-level adoption. This transition is often hindered by inter-individual heterogeneity, posing a formidable challenge in aligning sustainable diet requirements with individual preferences. To address this issue, we propose a personalized sustainable diet recommendation model based on a constraint-aware decision-making mechanism, where sustainability is incorporated through learnable constraints rather than modeled as user preferences. To systematically evaluate the proposed approach, we construct a sustainable diet dataset named SusDiet with about 150k recipes, characterized by broad coverage of sustainability indicators. Experimental results on this dataset show that our method promotes more sustainable choices without compromising individual preference. This work establishes a framework for aligning individual dietary choices with planetary health, offering quantitative evidence to guide future sustainable diet interventions and policy-making for sustainable development.
