How your student loans could double, triple or worse

I talked to a student recently who graduated dental school a few years ago with $300,000 of student debt (a figure some of you would be happy to have!). For a variety of reasons, she hadn’t worked in the last three years and spent some time overseas before that. Her outstanding debt is now closer to $450,000. In just a few years her outstanding debt increased 50 percent. What happened?