Too much calcium and vitamin D not good

A recent study showed that elderly folks were more bound to have brain lesions when their calcium and vitamin D levels were too high.

There can sometimes be too much of a good thing, yes? In this study, the conclusion was that the risk of cognitive impairment went up with those who has higher calcium and vitamin D levels.

However, the study's researchers stated that "we can't conclude that calcium or Vitamin D caused the brain lesions." But, all signs point in that direction.