December, 2022: This note is from my newsfeed: I have no comments to make, but it seems important. The cancer–microbiome connection Zion Levi’s melanoma went into remission thanks to a powerful immunotherapy drug called nivolumab. Then he donated his faeces — and the microbes inside — to help others who had failed to respond to the treatment or whose cancers had become resistant to it. It was a small trial — it involved only 26 people — but one in three of them benefited from the faecal microbial transfer (FMT). Today, at least 30 FMT trials are under way around…