Major in whatever field interests you and will allow you to maintain an excellent GPA. You do need to complete the pre-med requirements, preferably with A’s. These include at least a year of biology, 1 year inorganic chemistry, 1 year organic chemistry + labs, physics, calculus, and biochemistry. Your junior year, you will need to take an MCAT study course prior to taking the MCAT. With a solid GPA and MCAT score, you should be a competitive applicant.