My first reaction, considering it was from a social media site and the speaker looked more charismatic than professional, was that it was scammy, but the video Timothy posted is legitimate and cites the same source as the one I reposted, below. Yes, it is hyped, i.e., “cured diabetes”, and short on details, and as with much content on social media it is an opportunity for revenue generation, but, that said, the video offers the same Nature link I provided, so if one wanted to delve further into the details, one could.
This raises a different issue, in that one of the problems we have with disinformation, and the medical arena is a big area for this, is that many people get their information from social sites, from charismatic and authoritative-seeming sources, that sounds plausible, but it is mostly an avenue for grifters, if only by views, but also by alternative medicine scams.