US, Oct. 21 -- Researchers at University of Cambridge have tried to get to the bottom of some of the most Googled questions relating to dietary protein, sustainability, and optimal health outcomes - and Tofu is the winner.

Published in Frontiers in Sustainable Food Systems, Dr Chris Macdonald explored what are the best sources of protein currently available.

To answer the question, Dr Macdonald had to build a new holistic scoring system that combines measures of environmental impact, health, affordability, and availability into a single framework.

Applying the scoring system to 20 commonly consumed protein-rich foods, the analysis found a striking pattern: every product in the highest-scoring quintile was plant-based, while every prod...