Ah Bill San,
Before I start this is not to be inflamatory or sarcastic just a question I raise in regard to this subject all the time.
I am glad people such as the nuerological team that did the preliminary study at the University in Philly or Bruce Miller, are looking into this for some answers. Until then it seems everything we do in modern times from eating to breathing to watching TV is now harmful. So then the question could now be is it safer to do 2 or 3 LFK's a year, or spar once or twice a week, or play soccer once a week, or quaf an ale once or twice a week, or slam your palm on your forhead once a week (a day for some in higher stress positions). Is it possible that the attempted chokes in Jujitsu even though released before the partner blacks out have the same damaging effects. Let's face it anything that makes the head seem not right seems damaging to the brain, (now I have a reason for not riding those nausea inducing rides at the carnival, go for it kids). All this without Chi as well, again Chi is a label or term for the energy that travels throughout the body, Western terms are somewhat longer in their wording, but none the less still not completely understood. Any disruption in a normal energetic flow/nerve impulse/etc. is just that a disruption. What are the adverse affects of deadening the nerve tissue with Kontikite.
I have posted this as to offset some paranoia that these studies bring out in folks, not as a rebuttle. By the way in a real situation I still would prefer a LFK light force KO compared to a whomp upside the head that makes my brain bounce around my skull a bit, ripping little tissues, bruising grey matter, etc.
Hope to talk with you on the Kyusho Chat tonight.