Undergrad - 1977 - no debt (I worked as a waitress, attended a public university and received Social Security survivor benefits from the death of my father)
Graduate school - 1981 - $2,000 debt (I worked for a year in between as a lab tech, was paid as a teaching assistant during grad school, took out just the one loan for $2,000.)
Med School - 1985 - $20,000 debt (I worked for one summer between first and second year.Received some grant money - maybe the equivalent of the Pell grant? - and had one small scholarship for a few hundred dollars. Again,attended a public university. Ate a lot of beans and rice).
Even at the time, it was a very small amount of debt for a medical student - I knew colleagues who owed $100k - $150k.
I was fortunate in that the University of California was inexpensive and high quality; I worked where possible; I was experienced at stretching a dollar (beans and rice, sewed my own clothes etc); and received the social security money and grants. I only lived at home for my first year of college, but could have saved even more if I had not moved out.