TLDR: Just because a zero-carb gut microbiome doesn’t match a carb-eaters microbiome doesn’t mean there are health downsides to a different microbiome. Lots of assumptions to unpack. Net result is the microbiome research is suggestive currently, but nothing that should influence diet choices. Focus on real hard outcomes, not intermediate (microbiota) metrics.

Is the Carnivore Diet Dangerous in the Long Run? In this reaction video, Dr. Eric Westman reviews claims from a microbiome expert who argues that long-term carnivore eating may lead to gut dysbiosis, inflammation, and even osteoporosis.