Study design (IMAGE) American Society for Nutrition Caption For study participants who had mild cognitive impairment and took the probiotic Lactobacillus rhamnosus GG (LGG) for three months, cognitive scores increased. This cognitive improvement was also associated with changes in their gut microbiome. Credit Mashael Aljumaah, University of North Carolina at Chapel Hill and North Carolina State University Usage Restrictions Credit must be given to the creator. License CC BY 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.