Boundaries

One of my coworkers is a bit of an over-sharer. It can feel quite awkward. For example, I know:

1. Her parents are quite the bigots,
2. Her siblings are often unemployed/drunk/wastes of life, and, most horribly,
   
3. She just had a colonoscopy last week.

There is NO REASON for me to know this. I do not want the details of her medical history, especially regarding her butt. This is an OVER-SHARE.