Selenium Danger?

I'm male, age 53, 147 pounds, 5'11".  I've been taking 200 mcg of selenium daily. My diet emphasizes whole grains, fruits and vegetables. I exercise regularly. During my last medical exam I learned that I am pre-diabetic. I've read that selenium supplements have been linked to increased rates of type 2 diabetes. True?
Source: Dr. Weil Q and A - Category: Consumer Health News Source Type: news