My BA was in theater, I went back for an MA in religion and performance studies - used federal loans to help support myself and my dd (was single mom then). Then i got a phd in anthropology. Most phd programs pay a stipend. Had I skipped the MA I would have zero student debt.
I have friends who went back for science related fields after getting degrees in social sciences or humanities. One of them had to get a whole new BS. He did as much as he could at a community college, then switched. Not sure now but then and when I was in school it didn't matter if you had a degree already or not - you were still eligible for loans.
anthropologist mom to O
(12-30-04) and R
(4-22-10) Married to my best friend