schizophrenia - medicine or other?Watch
Clinically you could approach it through psychiatry which would require a medical degree followed by specialisation,
more biochemically you could go from a pharmacology, neuroscience, biology, physiology etc etc etc
you could do mental health issues research as a statistician...
What kind of research do you want to be doing?
Have you looked into psychology or neuroscience? Those sound more suited to your tastes.
Here's a list of neuroscience courses in the UK, which can give you more detail about the degree at different universities and what it entails:
And the same for psychology: