Review of Dietetics: Manual for the Registration Examination for Dietitians, 2020-2021 Edition

Mary Abbott Hess, LHD, MS, RDN, LDN, FAND

Review of Dietetics is the most comprehensive manual that covers all essential content of the “Study Outline” of the Commission on Dietetic Registration, which is the basis for current licensure examinations. This, and previous editions, have helped over 10,000 dietitians to become registered.

500 pages
$150.00 (Spiralbound)

*COMING SOON! * 2022-2024 Edition


The 500-page Review of Dietetics is a comprehensive manual that provides essential information on all content areas listed in the current Study Outline of the Commission on Dietetic Registration, which is the basis for  licensure examinations to obtain the RDN credential.

The book, which provides the facts needed to answer examination questions, gathers content of many courses into one volume. It reflects thousands of hours of research and organization by many subject-matter experts, faculty and reviewers over many years. Mary Abbott Hess, LHD, MS, RDN, LDN, FAND is the book’s editor.  The faculty of Cedar Crest College were contributors to this edition.

Over ten thousand exam candidates have studied from previous editions of Review of Dietetics and passed the registration exam to become RDN’s. This book is also used as a textbook in dietetic internships and as a desktop reference for educators and practitioners.

How does the 2020-2021 edition differ from earlier editions?

The Commission on Dietetic Registration (CDR) reorganized the content of the exam beginning in January 2017 based on the most recent practice audit. The 2020-2021 edition has added topics and updated material based on the new (2020) CDR outline.

Does the manual contain test questions?

No. Our format is a comprehensive book of study notes with information to answer questions however they may be asked. 

This manual is used as a text in many dietetic internships while other dietetic educators recommend it as a study guide to help their graduates pass the registration exam. It is in a spiral notebook format so students can mark notes and highlight specific topics for study. This is copyrighted material and it is illegal, and a violation of professional ethics, to copy or transfer any of the manual without permission.

Students can order manuals from or via the order form on this website. If 10 or more books are ordered in one shipment we offer a 10% discount.

We welcome your suggestions on how to improve the contents of the manual. As our knowledge base continues to change, we appreciate feedback as to additions, deletions or clarifications. If you would like to be a contributor or reviewer for future editions, please let us know.

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