Eh, still pretty bad advice. I'm guessing you've never taken an advanced level humanities course, which usually requires original research, critical thinking skills and advanced writing skills...you're probably less likely to develop some of those skills (particularly writing) as a run of the mill college science major. I did both the humanities and science thing (not to mention medical school and now residency), and hands down some of the most challenging courses I've ever taken were humanities.
This might be a harsh wake-up call, but about 95% of what you learn in college as a science major is also going to not be very (or at all) useful in medicine, either. The last time I used organic chemistry was on the MCAT, the physics I learned for the SAT is probably still more advanced than physics I use as a clinician, and literally by *day 4* of med school we had surpassed the content taught in several years of college bio...and to be honest, the first two years of medical school are ultimately fairly useless when it comes to clinical practice. 😉 The things that *do* serve you are critical thinking, understanding how to research, organization, and study skills...all things you can develop is either a science or non-science major. It's the same reason why humanities majors traditionally score better on the MCAT than science major...anyone can memorize science facts and basic principles, it's the ability to read critically and analyze which is the key skill for success in medicine.
This I agree with. 😉
OP, do what challenges you and what you enjoy. You'll be much happier (and do much better applying to med school) if you follow your passions and interests. What matters to adcoms--and I say this as a former adcom member--is that you demonstrate excellence in whatever your chosen field, not what that chosen field is. What matters are, as I said above, those intangible skills and character traits which you can develop in any field...intellectual curiosity, creativity, analytical skills, etc. They're looking for people who can succeed in whatever field they turn to, and are frankly more impressed by people who demonstrate mastery of several fields...it's the same reason why adcoms love applicants with great grades/scores AND amazing extracurriculars. The premed prereqs are prereqs for a reason...they're all you really, honestly need to succeed in medical school in terms of a science foundation (and, frankly, are more than you need). Do what you love and the grades and everything else will follow.