Nowadays, at the point reached in the field of health, a lot of information is rapidly emerging, changing and needs to be known. In addition, it is very important for many people to access this up-to-date information quickly. In this context, it is necessary to follow up-to-date information. Although the information mentioned in the book are current issues, each of them is supported with appropriate visuals to make it easier for the readers to understand. In addition, the chapters have been kept as short as possible in accordance with the learning objective.

We would like to thank and present our respects to the authors of the chapters who contributed to the preparation of this book, believing that it will contribute to the students of medicine, dentistry and biology, as well as to those related to the field of health, since this book is easy to understand.