Denial.
<{CMPALM}>
Just close your eyes to the problem and pretend it will go away....sure.
Looking at how this thread has so few responses given the importance it seems to be the most common reaction from BJJ practicioners.
Of course the same is true for Judo but like I mentioned, it is a much more rounded and balanced sport as it should be. BJJ took one dimension of Judo, got good at it and got famous for it, but now it seems there was a catch afterall, and quite a serious one.
This is not something that can just be dismissed and any grappler who trains with strangles and chokes, should be taking this research seriously.
"As the choke is held, and we strain against it, the soft and elastic tissues of the blood vessels can be strained, causing tiny stresses or tears in the vessel. The most serious example of these tears is called a vascular dissection. It is these tears, as well as the blood clots that form on them to heal the tissue AND residual scar tissue that forms during the healing process, that place us at higher risk for strokes and other neurovascular conditions"
This is serious stuff...medical knowledge is always progressing but it seems that when you struggle against it there is sometimes small damage and tiny tears to the arteries in the neck....even if they heal after which can still cause problems later. Who knows how often this happens and the conditions why some develop strokes and some do not but it seems the number of people suffering this and getting strokes is bigger than people think.