The Tantalizing Links between Gut Microbes and the Brain
Neuroscientists are probing the idea that intestinal microbiota might influence brain development and behavior http://www.scientificamerican.com/article/the-tantalizing-links-between-gut-microbes-and-the-brain/
The gut/brain axis has long been understood in Chinese medicine. The body and the mind are one and must be treated as such.