Nintendo didn't stop there. The gaming giant also stressed that adults shouldn't play in 3D mode for more than 30 minutes at a stretch. The warnings are not blanket reasons to avoid the 3DS altogether, but these are aggressive statements against what's supposed to be the central feature of the 3DS.
Is this a preemptive strike against medical experts that are sure to weigh in when the 3DS is released this spring? Nintendo is often keen to address potential problems before they become full-fledged PR nightmares, as evidenced by the repeat measures (wrist strap warnings and rubber shells) to guard against flying Wii Remotes.
[IGN]