If I'm interested in medical research- what are the best career options for me?

Fields I’m interested in: genetics, biochemistry, molecular biology, neuroscience (Alzheimer’s, Parkinson’s, etc), autism, Down’s syndrome, sickle cell anaemia- you get the idea- which path is the best one for doing all these?

I just posted in your other thread, might be best to try and consolidate these ideas rather than having multiple conversations going. My question would be what elements of these areas appeal to you? To what extent is your interest driven by scientific process vs. diagnosis and treatment?

Thanks!