Ask which major gets you into medical school and most answers boil down to a guess. AAMC's own data settles the first, easier question outright: the most popular major among medical school applicants is Biological Sciences, and it isn't close. What the same dataset shows next is the part that actually matters if you're choosing a major right now -- and it cuts against the obvious assumption.
The most popular major among medical school applicants, by the numbers
AAMC's Table A-17 -- MCAT scores and GPAs for applicants and matriculants to U.S. MD-granting medical schools, broken out by primary undergraduate major -- covers all 54,699 applicants in the 2025-2026 cycle. Biological Sciences accounted for 32,038 of them: 58.6%, more than three times the size of every other category combined:
- Biological Sciences: 58.6% (32,038 applicants)
- Other: 17.0% (9,288) -- AAMC's catch-all for majors outside its six named categories
- Social Sciences: 8.7% (4,758)
- Physical Sciences: 7.8% (4,243)
- Specialized Health Sciences: 4.7% (2,584)
- Humanities: 2.7% (1,453)
- Math and Statistics: 0.6% (335)
The dominance makes structural sense: most of the coursework medical schools require -- biology, chemistry, physics, math -- overlaps almost entirely with a standard Biological Sciences curriculum, so a student who knows early they're pre-med has an efficient, well-worn path already built for them. Choosing something else means layering the same required science sequence on top of an unrelated major, not swapping it out.
Biological Sciences majors don't matriculate at the highest rate
Here's the part the applicant-share numbers alone don't show. Dividing each category's matriculant count by its applicant count -- both published by AAMC for the same 2025-2026 cycle -- gives a matriculation rate per major, and Biological Sciences isn't the winner:
- Math and Statistics: 57.3% (192 of 335 applicants)
- Humanities: 52.0% (755 of 1,453)
- Physical Sciences: 51.3% (2,175 of 4,243)
- Social Sciences: 42.3% (2,014 of 4,758)
- Biological Sciences: 42.1% (13,480 of 32,038)
- Other: 40.7% (3,783 of 9,288)
- Specialized Health Sciences: 40.3% (1,041 of 2,584)
The most popular major runs almost exactly at the 42.9% all-applicant average -- while three rarer majors, Math and Statistics, Humanities, and Physical Sciences, all matriculate meaningfully above it. That's a real, AAMC-sourced pattern, not a rounding artifact -- but the reason behind it matters as much as the number itself, and it isn't "committees reward an unusual major."
Why the gap is self-selection, not a hidden major bonus
Look at the actual academic profile behind those matriculation rates, and the story changes. Per the same AAMC table, matriculants across every major category post nearly identical numbers: Biological Sciences matriculants average a 3.81 total GPA and 511.9 MCAT; Humanities matriculants average 3.80 and 513; Math and Statistics matriculants average 3.81 and 515.8. Once someone actually matriculates, their major barely moves their academic profile at all.
What differs is who applies in the first place. A student majoring in Math and Statistics who still commits to the full pre-med course sequence, MCAT prep, and clinical-hours requirement on top of an unrelated major is an unusually deliberate applicant to begin with -- the small size of that pool (335 applicants nationally, against Biological Sciences' 32,038) is itself a filter, not a coincidence. This is the same mechanism our piece on committee-letter filtering covers for schools' advertised acceptance rates: a smaller, more self-selected pool posts a higher rate almost by construction, whether the filter is a pre-health committee or the sheer effort of pairing pre-med requirements with an atypical major.
What this means for you
- Don't switch majors chasing a better matriculation rate. The gap tracks who applies, not what admissions committees reward -- a strong GPA and MCAT matter far more than which of these seven categories your major falls into, and the numbers back that up directly.
- Majoring in Biological Sciences isn't a disadvantage. It's the most efficient path through required coursework, which is exactly why 58.6% of applicants choose it -- the lower matriculation rate reflects a much larger, less filtered pool, not a weaker application.
- A non-science major doesn't hurt you, as long as you complete the required science coursework alongside it. If you're still early enough to be building that foundation, start with real clinical exposure in high school before locking in either path.
- Small categories swing more between cycles. Math and Statistics' 57.3% rate comes from just 335 applicants nationally -- a real number, but one with far more year-to-year noise than Biological Sciences' 32,038-applicant base.