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Neuropathies associated with nutritional deficiencies are commonly encountered by neurologists and general practitioners. To study associated factors, investigators retrospectively identified 40 patients (age range, 16–72 years; 83% female) with new-onset nutritional neuropathy and poor oral intake and weight loss. Risk factors included alcohol use disorder, bariatric surgery, dietary modification, gastrointestinal disturbance, and eating disorders. The most common deficiencies were vitamin B1, vitamin B6, and folate. Vitamin E, copper, and vitamin B12 levels were normal in most. Two thirds of patients required hospitalization. Only one patient had abnormal cerebrospinal fluid (elevated protein). Associated conditions included Wernicke ence…