I just wanted to elaborate with a footnote without breaking the flow of what I was saying. Checking, the only thing I had saved that might have mentioned it 404ed, although I think that may have just been a resource on doing a blood choke without threatening the wind pipe. This is just general kink community knowledge though, like the risk of nerve/joint damage from poorly placed restraints or how blunt force impacts to the abdomen and particularly around the spine or kidneys are very dangerous.

But like, stopping blood from moving is bad and has a risk of making blood clots (this is why sitting for excessively long periods of time causes a risk of DVT, as blood pools in one’s legs more than it should), and cutting off oxygen to the brain is also extremely bad. The only bit that contradicts conventional knowledge is the more recent research that even brief reductions in blood flow to the brain cause brain damage that builds up over time in the same way that minor head impacts add up (another recent discovery, since before the assumption was just that serious concussions were bad but lighter impacts didn’t cause injuries).

The article in OP does mention and link studies about the brain damage risk though, I think.