Reed Mangels is a nutrition advisor for the Vegetarian Resource Group and a regular columnist and nutrition editor for Vegan Journal. Her books include The Dietitian’s Guide to Vegetarian Diets (4th edition, 2022), co-authored with Virginia Messina and Mark Messina, Simply Vegan (5th edition, 2013), co-authored with Debra Wasserman, and Your Complete Vegan Pregnancy (2019).