actually, the body doesn't change much, but medical practice changes a lot over a few years. Treatments and standards of care change pretty frequently, so you

actually, the body doesn't change much, but medical practice changes a lot over a few years. Treatments and standards of care change pretty frequently, so you do need to keep up (if you are practicing) There are required continuing medical education credits to maintain your licensure. And board certification expires in 10 years, so you need to re-take the licesnsing tests every 10 years besides doing regular education every 2 years.