Walnuts the new super food (IMAGE) University of South Australia Caption Walnuts may counteract the effects of academic stress on the gut microbiota during periods of stress, especially in females. Credit Open Verse Usage Restrictions Credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.