You are encouraged, as much as possible, to tailor your course selection to your interests in any areas within the liberal arts. Most medical schools specify that the applicant's major does not affect admission decisions. Other factors being equal, they prefer a diversity of majors in their entering classes. If you really want a liberal arts education, you should pursue that goal. It will not affect your admission prospects.
Some medical schools have additional requirements.
The most important standards for admission to medical school are the applicant's Grade Point Average and the MCAT scores. Medical schools are more concerned with the quality of the applicant's work than with the pattern of work. Because people generally do their best when they do things they like, we recommend that you choose a major that matches your intellectual interests. It is not uncommon for pre-medical students to major in English or philosophy or psychology. If you really want a liberal arts education, you should not hesitate to pursue it.