By Tarun Sai Lomte Reviewed by Susha Cheriyedath, M.Sc. Apr 2 2026 A new review maps the growing toolbox used to judge meals and diets on both nutrition and environmental impact, but shows that inconsistent methods still stand in the way of a clear standard. Food-based indices for the assessment of nutritive value and environmental impact of meals and diets: A systematic review . Image Credit: PeopleImages / Shutterstock In a recent study published in the journal  PLOS ONE , researchers