Answer:
Yes you can, as long as you fulfill all the prerequisites for any medical programs you are applying for. Most programs require you to complete classes in biology, chemistry, calculus, physics and others, but I am unaware of any programs in the US or Canada which require a hard science degree for admission. For example I had many classmates in medical school who had degrees in various fields such as linguistics, psychology, business administration and communications. The American Medical College Application Service (AMCAS) website is a good resource to learn about some of these prerequisites (at least for schools in North America) since it is the main tool used to apply for US medical schools, though you should check with individual programs to determine their application criteria requirements.