Some with bipolar and especially with anxiety may be interested in psychiatric service dogs: http://www.iaadp.org/psd_tasks.html

Then there is the issue of people finding (even after decades) that their bipolar symptoms were due to something medically and/or nutritionally testable and/or treatable:

http://jccglutenfree.googlepages.com/

http://itsnotmental.blogspot.com/

*edit*