From the ‘we are space craft run by bacteria’ department…

https://phys.org/news/2018-01-good-bacteria-genes.html

This work, led by Dr. Patrick Varga-Weisz shows how chemicals produced by bacteria in the gut from the digestion of fruit and vegetables can affect genes in the cells of the gut lining. These molecules, called short chain fatty acids, can move from the bacteria and into our own cells. Inside our cells, they can trigger processes that change gene activity and that ultimately affect how our cells behave.

Have you heard of nutrigenomics? (“The study of the effects of foods and food constituents on gene expression.”)

Genetics is completely main stream. Certain genes for eye color, certain genes pre-dispose you to this disease or that cancer. Wizardy one hundred years ago. Totally main-stream today. Next came “the gut biome” (the collection of genes in the bacteria in your gut) and how that DIRECTLY affects you. Some people are not yet up to speed on the gut biome, but most everyone is now on board.

Next up is nutrigenomics. The realization (this is not wacky theory, but now a part of functional medicine) that what you eat LITERALLY alters the expression of your DNA. What you eat, literally alters how your body — your individual cells — activate and use your DNA.