Constant sun -- too much of a good thing?

Vitamin D, which is increased by exposure to sunlight, is now...

"Too much sunlight in places like Greenland where long summer days often cause insomnia appears more likely to drive a person to suicide, Swedish researchers said Friday.

Despite a belief that suicides tend to rise in late autumn and early winter months because of darkness, the new findings suggest that places where constant sunlight in summer seasons is a fact of life may be just as dangerous."

...Vitamin Dangerous and Vitamin Death.

Oops.