I am considering what to do after earning my bachelor's of science in biology. I am interested in studying the biology of aging. Should I continue on to study for a Phd or is it worth getting an MD/Phd to study aging? I am not interested in clinical work. I'm just curious to see if earning a MD will either more doors than a PhD or if I will gain a better understanding of the human body by doing an MD vs a PhD. Any insight would be much appreciated.