I don't think you are ever too old to learn something new!

Med is very demanding and would take a lot of dedication and time...all the uni hours, study, placements. One of my friends is doing Med, 5 years of uni full time then a few more to specialise....phew! But hey if you have the time and patience it would be a very rewarding. I think a bit of life experience is a good thing to have on your side especially in the health care field.