Many diseases and disorders have a genetic underpinning. Sometimes, the relationship between a defective gene and a disease is well known to scientists, as is the case in hemophilia, cystic fibrosis, and Huntington's disease. For many other diseases and disorders, it is believed that genes, together with environmental factors, cause the condition, such as for diabetes, asthma, and Parkinson's disease. In this new full-color series, Genes and Disease describes what scientists know and what they hope to learn in the near future about the relationship between genes and disease. Discussing the technologies and experimental methods that have led to our current understanding of a particular disorder, each title details the recent advances in medicine and molecular biology that may unlock the mysteries of genetic disease. The series surveys existing and potential future treatments, explores possible cures, and covers the ethical concerns of treating genetic diseases. Each title features additional references, suggestions for further reading, Web sites, a glossary, and an index.