How can I pay for medical school in the US? So I have a bachelor's degree and am planning on applying to medical school this year (in the US). I've previously used federal student aid to cover the cost of my undergraduate degree. 

My question is, what types of sources of funding are available to cover the cost of medical school?  From what I'm reading, it seems like you can no longer get federal student aid after you have already attained a degree.

Note: I am not asking ("shopping") for specific sources, I am just wondering what types of sources (e.g., loans, stipends, savings) medical students in the US typically use to fund their studies.
By far, for professional medical education in the US, it is most common to pay for education with loans (or personal funds, if available). Even low-cost schools are expensive relative to undergraduate education. The median educational debt for graduating students is >$190k in the USA. Debts are worse if you consider earning potential in other fields.

It is simply uncommon for medical study in the US to be paid for government or other funds - these funds are limited to programs for underprivileged minorities and for those pursuing joint degrees in the sciences (and even then, loans predominate).

Being a medical doctor in the USA is lucrative, but becoming one entails major risk. Further discussion is probably beyond this stack but these discussions are constant in academic journals.