[color=red]3[/color][color=black]DS[/color] who says it will give you headaches?

To answer that:
Reggie recommended (a long time ago) that children 7 years and under should avoid using the 3DS, following Nintendo conducting joint research with specialists in the 3-D field. News sources interpreted it to mean headaches. And as of now, Nintendo isn't retracting their warning.

Catch my drift.