It is now clear that our risk of developing almost any disease is influenced by the genes with which we are born. One of the most important dividends of the Human Genome Project will be a much greater understanding of the influence of genes on disease and disorders in children (from asthma to autism) and adults (including heart disease, virtually all cancers, and Alzheimer's disease). The nature of genetic risks in families is becoming clearer and this book is written to help people understand them. Philip Reilly, a physician-geneticist, who has given hundreds of lectures on this subject, takes a user-friendly approach. Drawing on the many questions he has been asked (for example, "My sister has multiple sclerosis. Am I at an increased risk?"), Reilly discusses over 90 common conditions, diseases, and disorders, arranged from conception to old age. In frank, non-technical terms, he makes clear what is known and not known about the genetic factors and, if your risk is elevated, what you might be able to do about it. This book is a uniquely valuable resource for anyone seeking more information about a family's disease heritage.