https://www.healio.com/gastroenterology/nutrition/news/online/%7bf8eaf908-ecc4-47bb-81d3-0df8edf7423b%7d/diet-lifestyle-outweigh-genetic-impact-on-gut-microbiome

Research has shown that the composition of bacteria within ones gut determines many factors that many individuals do not know about, such as aiding many body mechanisms related to our immune system, psyche, and metabolism.

What kind of diet and environmental factors would contribute to a healthy gut microbiome? Many individuals in this day in age have completely stopped eating meat - would this have a positive impact on ones gut microbiome?