They change the very expression of genes in the body, and you can influence that based on the amount, but also the type of foods you eat. (blog.bulletproof.com)
The germ - free and antibiotic - treated mice also had reduced expression of genes involved in inflammation. (nih.gov)
Muscle expression of genes associated with inflammation, growth, and remodeling is strongly correlated in older adults with resistance training outcomes. (fitnessandpower.com)