An in-depth look at the advances that have taken place in the world of medicine since earliest times, for middle school and high school readers. In centuries past, some remedies were as bad as the diseases they were supposed to cure. However, in the last 100 years, discoveries and technical innovations have ensured that many conditions and diseases that were once fatal can now be treated with high degrees of success. The book also examines advances made in our understanding of reproduction and genetics. Includes definitions of science words, sidebars, timeline, glossary, further resources, and index.