Gut Check: Exploring Your Microbiome
by Rob Knight, Jessica L. Metcalf, Katherine R. Amato · University of Colorado Boulder / Coursera
Six-module university course from microbiome researchers covering how microbes are identified and sequenced, the gut microbiota's links to nutrition, health and behavior, and lessons from the American Gut citizen-science project. About 16 hours of video. The only university-backed introductory microbiome course with real scientific depth.
More resources on Gut Health & the Microbiome
A Consensus Statement on establishing causality, therapeutic applications and the use of preclinical models in microbiome research
Open-access Delphi consensus from the Human Microbiome Action Consortium on what animal and cell models can and cannot show about the microbiome causing disease. It sets out the evidence needed before claiming causation.
Gut-microbiota-targeted diets modulate human immune status
The most-cited human randomized evidence on fermented foods versus fiber — a real primary study instead of claims about one. Stanford randomized 17-week trial comparing high-fiber and high-fermented-food diets in healthy adults. Fermented foods raised microbiome diversity and lowered inflammatory markers; added fiber changed microbial enzymes without raising diversity.
Role of the gut microbiota in nutrition and health
The best free, clinician-readable bridge between popular explainers and the primary literature. Open-access BMJ review of how diet (fiber, fat, processed foods, sweeteners) alters gut microbial composition and metabolites such as short-chain fatty acids. It also covers what trials show for probiotics and prebiotics, and why individual responses to food vary.
I Contain Multitudes: The Microbes Within Us and a Grander View of Life
The consensus best general book on the microbiome. Science journalist's account of how microbes shape animal and human biology, from development and immunity to disease. It covers fecal transplants and probiotics, and repeatedly separates solid findings from overhyped claims about the microbiome.
Probiotics: Usefulness and Safety
The authoritative neutral counterweight to probiotic marketing: separates conditions with some evidence from the many with none, and notes the FDA has approved no health claims for probiotics. NIH fact sheet summarizing the evidence for probiotics condition by condition, including antibiotic-associated diarrhea, infant health and IBS. It also covers how the FDA regulates probiotics as supplements or drugs, and known safety risks such as infections in premature infants.
The Microbiome (The Nutrition Source)
Harvard T.H. Chan School of Public Health overview of what the gut microbiome is, how fiber-rich and prebiotic foods shape it, the role of probiotics and fermented foods, and where the research is still preliminary.