So does whiskey, won't stop people from drinking it.

Back in the day I used to get headaches from playing F-Zero on the SNES because of how quickly the backgrounds moved, and I knew people who used to get very dizzy when playing Mario 64 because they became disoriented when navigating a 3D world in game. Over a short period of time people became used to these games (typically after a couple of days/weeks) and the problems went away ... I suspect that any problems with the 3DS will be similar, and by the time the average person has owned it for a couple of weeks they will have no issues with it.

Nintendo always care about health issues, don't think this will 'cause dizzyness, the first time i played SMG i went dizzy but after a while it was ok, it just have to get used to it, maybe people playing just bash the 3ds 'cause deep inside them they want to succeed sooo badly

But by the time they get used to them, their 3DS' circuits will be irreparably corroded by their vomit!!!   

I swear I poste din this thread, maybe an old backup was done.

Like I said, I use to get headaches with 3d movies when they first come out. Now they are like second nature to me.  So I am sure these issues are minor and won't affect everyone.

Human eye is adapting.

I had headache after 1hour of using my first LCD screen now i can freely watch them whole day.

I used to get dizzy from FPSes.