Dr. Mercola, Guest Waking Times Your gastrointestinal tract is now considered one of the most complex microbial ecosystems on earth, and its influence is such that it’s frequently referred to as your “second brain.” Nearly 100 trillion bacteria, fungi, viruses and other microorganisms compose your gut microbiome, and advancing science has made it quite clear that these…Read more & video: “Dr. Mercola Interviews Dr. Perlmutter About Gut Microbiome”