Information on recommended therapies for specific disorders and diseases and medicinal uses for plants and herbs are balanced by conclusions of studies on efficacy and analysis of current levels of acceptance by traditional scientists and doctors. Biographies of pioneers in the field -- including Deepak Chopra, Edward Bach and David Palmer --appear as sidebars through the text. Included in each entry are glossary sidebars that define key terms. The four volumes contain more than 800 entries, approximately 400 color images, and many informative illustrations and charts pertaining to herbs and flowers, therapies and procedures, nutrition, and diseases and conditions. More than 50 new entries were added, on topics ranging from cherry juice, modified citrus pectin, oleander, and horticultural therapy; most existing entries were reviewed and updated, and many new images, charts and illustrations were added.