26 Mar 2020 --- A more personalized approach is needed to investigate the link between nutrition and the microbiome. This is according to a study by the George Washington University (GW) and the National Institute of Standards and Technology (NIST) in the US, which found that diet has a significant impact on the gut’s microbial composition. Published in Nutrition Reviews, the study also discovered the diet-microbiome link can affect a range of metabolic, hormonal and neurological processes.