“Self Heal by Design” by Barbara O’Neill is a trade paperback textbook published in 2023. Focused on the role of micro-organisms for health, this book covers a wide range of topics in the cooking and health & fitness subject areas. With a user-friendly A to Z series format, adult learners and those in further education can benefit from the revised edition by the respected author, Barbara O’Neill. This book offers valuable insights into the world of micro-organisms and their impact on our overall well-being, making it a valuable resource for anyone interested in improving their health through design and cooking.