Abstract: Basic information, facts, and case studies are related by an expert in human metabolism to aid hypglycemic patients in a better understanding of the consequences, prognosis, prevention and treatment of low blood sugar. The many causes of hypoglycemia are explained, and information is provided to show why so many people are currently treated for hypoglycemia when they may be suffering from other treatable ailments. The authors suggest that a more specific diagnosis be made in order that effective treatment can be applied. The text relates how to diagnose hypoglycemia, and how to discover, treat, and prevent its underlying causes, emphasizing that hypoglycemia is a manifestation of some underlying abnormality, not a disease in itself. A reference chapter provides an alphabetized list of defined terms, with illustrative examples and self-contained explanations. (wz).