This book focuses on the impact of nutritional disorders on the nervous system. Nutritional disorders are caused due to poverty, famine, infestations, ignorance in the developing world and due to food faddism, isolation, depression, addictions, and comorbidities in the developed countries. This book has chapters on various disorders covering basic knowledge, their clinical manifestations, basis and etiology, laboratory diagnosis, method of treatment and prognosis. It provides the guidelines to students and clinicians for dealing with such disorders which are easily preventable and amenable to treatment whose early diagnosis and management can avert morbidity and mortality.