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Current image\u2010based assessment tools and 3D food printing systems are often disconnected, lacking end\u2010to\u2010end evaluation. This study presents an integrated platform that converts meal images into personalized 3D\u2010printed macronutrient supplements. The system combines smartphone image analysis, volume calculation, nutrient recommendation, and automated G\u2010code generation for a custom dual\u2010nozzle 3D printer. Four nutrient\u2010rich inks (avocado, purple sweet potato, red lentil, chicken breast) were formulated with guar gum and characterized for extrusion\u2010based fabrication. The AI dietary assessment module achieved a mean volume and weight estimation error of 37.25%, with macronutrient estimation errors between 31% and 38%. Ablation studies demonstrated that user\u2010calibrated 3D depth reconstruction reduced volume errors compared to 2D baselines and uncalibrated models. During fabrication, the optimized inks exhibited shear\u2010thinning behavior and elastic\u2010dominant responses, enabling stable extrusion. Printed shape fidelity ranged from 89.67% to 99.00%, and weight accuracy from 79.00% to 96.00%. These results demonstrate the feasibility of a closed\u2010loop workflow linking AI dietary assessment with automated, on\u2010demand food fabrication, paving the way for precision nutrition\u00a0interventions.<\/jats:p>","DOI":"10.1111\/1750-3841.71425","type":"journal-article","created":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T09:42:22Z","timestamp":1789033342000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["AI Digitized 3D\u2010Printed Meal for Personalized Nutrition"],"prefix":"10.1111","volume":"91","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7566-2605","authenticated-orcid":false,"given":"Connie Kong Wai","family":"Lee","sequence":"first","affiliation":[{"name":"Division of Integrative Systems and Design The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong SAR China"},{"name":"School of Innovation The University of Hong Kong Pok Fu Lam Road Hong Kong SAR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siyu","family":"Chen","sequence":"additional","affiliation":[{"name":"Division of Integrative Systems and Design The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong SAR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wing Yan","family":"Poon","sequence":"additional","affiliation":[{"name":"Division of Integrative Systems and Design The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong SAR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yee Him Timothy","family":"Chan","sequence":"additional","affiliation":[{"name":"Division of Integrative Systems and Design The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong SAR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yang","family":"Xu","sequence":"additional","affiliation":[{"name":"Division of Integrative Systems and Design The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong SAR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuyan","family":"Zhu","sequence":"additional","affiliation":[{"name":"Department of Food Science and Nutrition The Hong Kong Polytechnic University, Hung Hom Kowloon Hong Kong SAR China"},{"name":"Research Institute for Future Food The Hong Kong Polytechnic University, Hung Hom Kowloon Hong Kong SAR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mitch Guijun","family":"Li","sequence":"additional","affiliation":[{"name":"Division of Integrative Systems and Design The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong SAR China"},{"name":"Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong SAR China"},{"name":"Center for Smart Manufacturing The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong SAR China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,10]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/wics.101"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1080\/10942912.2024.2433229"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fnutr.2025.100032"},{"key":"e_1_2_9_5_1","unstructured":"Bochkovskii A. 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