Low body mass index demonstrates satisfactory specificity for diagnosing malnutrition and is associated with longer hospitalization in patients with gastrointestinal or head and neck cancer: a prospective cohort study

Low BMI showed adequate specificity for diagnosing malnutrition and was associated with longer LOS in patients with gastrointestinal or head and neck cancer. Further research is needed to explore how improved screening, interventions and nutritional support could reduce malnutrition rates in cancer patients.