Diabetic foot ulcers are one of the complications of diabetes. Malnutrition is one of the risk factors for wounds but, on the other hand, diabetic foot ulceration may promote malnutrition. In this single-centre retrospective study we evaluated the frequency of malnutrition at first admission and the severity of foot ulceration. We demonstrated that malnutrition at admission correlated with duration of hospitalisation and with death rate rather than with the risk of amputation. Our data challenged the concept that protein-energy deficiency may worsen the prognosis of diabetic foot ulcers. Nevertheless, it is still important to screen nutritional status at baseline and during the follow-up in order to start specific nutritional support therapy as soon as possible in order to reduce morbidity/mortality related to malnutrition.