{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T04:07:21Z","timestamp":1784779641336,"version":"3.55.0"},"reference-count":25,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T00:00:00Z","timestamp":1762905600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Fundacion para estudios Endocrino-Metabolicos","award":["2023\/12"],"award-info":[{"award-number":["2023\/12"]}]},{"name":"Instituto de Investigaci\u00f3n Sanitaria del Hospital Cl\u00ednico San Carlos","award":["2024\/12"],"award-info":[{"award-number":["2024\/12"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Aims: Gestational diabetes mellitus (GDM) represents an increasing global challenge. Mediterranean diet interventions have proven benefits, but their implementation is limited by the absence of nutritionists in many public health systems. This study aimed to evaluate whether a video intervention guided by a nutritionist could increase compliance to Mediterranean diet and reduce the incidence of GDM and adverse maternal\u2013neonatal outcomes. Methods: In this randomized controlled trial, 1750 consecutive pregnant women were allocated (1:1) to standard care (verbal, printed advice) or to a video designed by a nutritionist promoting a Mediterranean and physical activity. The primary outcome was the incidence of GDM; secondary outcomes included other pregnancy-related complications. Dietary adherence was assessed using the 14-item Mediterranean Diet Adherence Screener (MEDAS) score. Results: The experimental group increased their MEDAS score from baseline to GDM screening (mean difference (95% CI) 0.41 (0.23; 0.60); p &lt; 0.001), mainly through greater extra virgin olive oil and nut intake and lower consumption of juices and confectionery. GDM incidence declined from 25.1% to 20.7% (p = 0.025), with significant reductions in gestational hypertension, episiotomy and neonatal intensive care unit admissions. Conclusions: Nutritionist-guided video intervention improves adherence to Mediterranean diet and reduces GDM incidence and adverse outcomes. This low-cost, scalable approach may help overcome structural limitations in public health systems.<\/jats:p>","DOI":"10.3390\/nu17223533","type":"journal-article","created":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T08:34:58Z","timestamp":1762936498000},"page":"3533","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Nutritionist-Guided Video Intervention Improves Adherence to Mediterranean Diet and Reduces the Rate of Gestational Diabetes Mellitus: A Randomized Clinical Trial"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-5784-0277","authenticated-orcid":false,"given":"Roc\u00edo","family":"Mart\u00edn-O\u2019Connor","sequence":"first","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8824-9200","authenticated-orcid":false,"given":"Ana M.","family":"Ramos-Levi","sequence":"additional","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"},{"name":"Facultad de Medicina, Departamento de Medicina II, Universidad Complutense de Madrid, 28040 Madrid, Spain"},{"name":"Centro de Investigaci\u00f3n Biom\u00e9dica en Red de Diabetes y Enfermedades Metab\u00f3licas Asociadas (CIBERDEM), 28029 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9585-0187","authenticated-orcid":false,"given":"Ricardo","family":"Saviron-Cornudella","sequence":"additional","affiliation":[{"name":"Departamento de Obstetricia y Ginecologia, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9310-1545","authenticated-orcid":false,"given":"Bricia","family":"L\u00f3pez-Plaza","sequence":"additional","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"},{"name":"Facultad de Medicina, Departamento de Medicina II, Universidad Complutense de Madrid, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ang\u00e9lica","family":"Larrad-Sainz","sequence":"additional","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2383-1563","authenticated-orcid":false,"given":"Ana","family":"Barabash","sequence":"additional","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"},{"name":"Facultad de Medicina, Departamento de Medicina II, Universidad Complutense de Madrid, 28040 Madrid, Spain"},{"name":"Centro de Investigaci\u00f3n Biom\u00e9dica en Red de Diabetes y Enfermedades Metab\u00f3licas Asociadas (CIBERDEM), 28029 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Clara","family":"Marcuello-Foncillas","sequence":"additional","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"},{"name":"Facultad de Medicina, Departamento de Medicina II, Universidad Complutense de Madrid, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7326-6008","authenticated-orcid":false,"given":"In\u00e9s","family":"Jim\u00e9nez-Varas","sequence":"additional","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8137-5637","authenticated-orcid":false,"given":"Angel","family":"Diaz-Perez","sequence":"additional","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"},{"name":"Facultad de Medicina, Departamento de Medicina II, Universidad Complutense de Madrid, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7103-4580","authenticated-orcid":false,"given":"Paz","family":"de Miguel","sequence":"additional","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"},{"name":"Facultad de Medicina, Departamento de Medicina II, Universidad Complutense de Madrid, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0495-6240","authenticated-orcid":false,"given":"Miguel A.","family":"Rubio-Herrera","sequence":"additional","affiliation":[{"name":"Departamento de Endocrinolog\u00eda y Nutrici\u00f3n, Hospital Cl\u00ednico San Carlos, Instituto de Investigaci\u00f3n Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain"},{"name":"Facultad de Medicina, Departamento de Medicina II, Universidad 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