The mind-gut connection How the hidden conversation within our bodies impacts our mood, our choices, and our overall health

Microscopic life bacteria, viruses, fungi teems and thrives within our bodies. Gastroenterologist Mayer estimates that there are 100,000 times more microbes in your gut alone as there are people on earth. And be amazed (or repulsed) by his calculation that the weight of all your gut microorganisms combined is in the range of two to six pounds. Mayer elucidates the intricate biochemical dialogue that occurs between the brain, digestive tract, and trillions of bacteria residing in the gut. He dubs this form of communication microbe-speak and speculates on its implications for social behavior, decision making, emotional well-being, and maybe mental health. Microbes can signal the brain via neurotransmitters such as serotonin, metabolites, and hormones. Mayer hypothesizes that some gastrointestinal bacteria might produce substances that can dampen anxiety (giving greater meaning to the term gut feelings). He suggests approaches to maintaining the health of gut microorganisms, including feeding them organically grown foods, probiotics, and naturally fermented products. Even more than a complex ecosystem, the human microbiome is a miniature universe. Only recently have we commenced its exploration.--Miksanek, Tony Copyright 2016 Booklist