ObjectivesThe aim of our work was to assess the nutritional status and to determine the prevalence of undernutrition in type 2 diabetic patients hospitalized in a center specializing in Nutrition, Diabetology and Metabolic Diseases. MethodsThis is a descriptive cross-sectional prospective study, which involved 40 type 2 diabetic patients, aged 18 and over, hospitalized in department A of the National Institute of Nutrition and Food Technology. The assessment of nutritional status was carried out using clinical means (kinetics of weight loss, a dietary survey, anthropometric measurements, impedancemetry, Nutritional Risk Score 2002 for those under 70 years old and the Mini Nutritional Assessment from 70 years old) and biological (albuminemia). The positive diagnosis of malnutrition was selected according to the criteria of the High Authority of Health of 2019 for adults under 70 years, and of 2007 for elderly subjects. ResultsThe mean age was 59.6 ± 11.59 years old. The average duration of diabetes was 10.83 ± 8.03 years. The mean level of glycated hemoglobin was 11.03 ± 1.97% and the Body Mass Index was 28.88 kg/m2 with extremes ranging from 14.6 to 40.9 kg/m2. Weight loss was noted in 48% of patients. Calorie intake was low in 30% of the patients. Protein and mono-unsaturated fatty acid low intake was noted in respectively 28% and 70% of patients. More than half of patients had deficiency in vitamin C, D, B12 and B9 as well as in zinc, calcium, magnesium and cooper. Iron and vitamin B12 low intake was more prevalent in patients with malnutrition (p = 0.043 and p = 0.003 respectively). The mean serum albumin was 37.58 ± 2.93 g/l with ranges ranging from 27.2 to 43.8 g/l. Malnutrition was diagnosed in 25% of patients and in half of the cases, it was severe. ConclusionsPatients with type 2 diabetes mellitus are at high risk of malnutrition with a high prevalence of dietary intakes deficiencies. Funding Sources1. HAS. Diagnostic de la dénutrition de l’enfant et l’adulte. Service de bonnes pratiques professionnelles, 2019. 2. HAS. Stratégie de prise en charge en cas de dénutrition protéino-énergétique chez la personne âgée. Service des recommandations professionnelles. Avril 2007. 3. Anses. Actualisation des repères du PNNS: élaboration des références nutritionnelles. Saisie n° 2012-SA-0186. Avis de l’Anses. Rapport d’expertise collective. Décembre 2016.