Table 1.

Summary of some factors that have been found to influence the composition of the microbiome.

Factors That Influence the Microbiome
Host Factors	Environmental Factors	Dietary Factors
Diabetes	Alcohol	Fiber intake
Exercise	Microplastics	Indigestible carbohydrates
Genetics	Pesticides	Western diet and red meat
Immune health and immunosuppression	Other chemical exposures	Probiotics and fecal transplant
Obesity	Smoking	Processed foods