"The Wellness Encyclopedia of Food and Nutrition" by Sheldon Margen M.D. is a comprehensive nonfiction book published by Penguin Random House LLC in 1992. This hardcover book, measuring 10.3 inches in length and 8.3 inches in width, contains 512 pages filled with information on nutrition and general well-being. With illustrations included and a focus on medical and cooking topics, this book is intended for adult readers interested in improving their health through proper diet and lifestyle choices. The author's expertise in the field of nutrition, specifically at the University of California at Berkeley, adds credibility to the information presented in this informative resource.