The biggest cause of mental illness is...
*drumroll please*
Magnesium deficiency.
Magnesium calms the nerves while Calcium aggravate the nerves. Your nervous system communicates throughout your body. As a result, a lot of strange behavior is shown.
This is pretty much global too. If you're interested in more, got a link - Magnesium Deficiency | Ancient Minerals
I know we ain't supposed to save strippers....
but....