>microbiomic alterations would cause a sufficient neuronal structure shift.
see
MICROBES, VIRUSES, IMPRINTED GENES, AND HUMAN BEHAVIOR 1
Humans as Superorganisms:
How Microbes, Viruses, Imprinted Genes and Other Selfish Entities Shape Our Behavior
Peter Kramer and Paola Bressan
University of Padua, Italy
Author Note