## Question
SUBJECT: Pituitary gland/high level Vitamin D
MESSAGE: My sister has a high level of Vitamin D in her system/blood work.  Her specialist cannot find the cause.   Would there be any connection with her pituitary?   Had her thyroid gland removed 3 years ago, and cancer in breast/removed cancer and had radiation/cured 2 years ago.

## Expert Summary
What are the causes of high vitamin D levels?