Recent medical school graduates, saddled by high student loan debt, sometimes have a hard time qualifying for a first mortgage. Now, however, a growing number of lenders will consider future earnings potential of high earners in the medical profession as a way to offset high debt ratios. But specialty mortgages for young physicians aren't the only unique loans available today. Nationwide, there are a number of unique programs designed to help first-time buyers qualify for a mortgage loan. While some target specific professions, others are open to a wider range of applicants. They are definitely worth exploring if you're interested…