Measuring the brain-gut axis in Psychological Sciences: a necessary challenge
Cognitive process and associated states such as wellbeing are embodied, in a process of phylogenetic and ontogenic interdependencies, encompassing an organism’s both internal and external environments. Diurnal mammals’ physiology has been enslaved by the day/night cycle, imposed to planet Earth from the cosmos. Mammals’ physiology is furthermore entangled to the micro-dynamics of small organisms, imposed onto the body through the development of a symbiotic relationship unfolding throughout ontogeny and phylogeny. Therefore, adequate scientific study of human behavior will include as many levels as possible: socio-cultural, psychological, microbiological, etc. The brain-gut-microbiota topic represents a fascinating opportunity to expand our knowledge about cognition, mental health, and life in general. It is important to frame this research topic from multiple perspectives including biological/medical sciences, public policy, architecture, urbanism, and psychology. Furthermore, recent philosophical and epistemological advances, under the 4E-cognition framework, will help the integration of evidence, providing new insights and novel hypotheses.