"Iodine: Why You Need It, Why You Can't Live Without It" by David Brownstein MD is a textbook focused on the medical subject area of endocrinology and metabolism. Published by Medical Alternative Press in 2004, the fourth edition of the book delves into the essential role of iodine in human health. With 259 pages of valuable information, this text provides insights into why iodine is a crucial element for our bodies to function properly. The author's expertise and in-depth exploration make this book a valuable resource for those interested in understanding the importance of iodine in our diet and overall well-being.