"Anything is possible" that's a phrase I'm sure we have all heard but is it actually true?
I feel like there is a limit to who can actually enter medical school, the person imo needs to have some sort of "natural" intelligence.
By "natural" intelligence, do you mean privilege?
You can't make up for privilege by working hard. If you are born into being poor, overcoming that adversity will require more than "natural" intelligence. Statistically, you are also going to need luck to climb out of the low-income pit and find a way to graduate from the school of hard knocks while working 40h/week to support your family in a bad neighborhood where you have more annual deaths from gun crimes than practicing doctors... you get the idea...
You could be street-smart but that won't get you into medical school. It will only get you into trouble.
... and who will co-sign for your 250k in loans if you have a criminal past and poor credit history?
I think for people who are privileged, working hard can open more doors than if you are born into the ghetto and into a broken family that speaks Spanish. There are people who were born and raised in Chinatowns across this nation who do not speak a word of English after 25 years. How will these people score in VR? They haven't made it beyond high school English. This doesn't mean they are dumb. Last week at the hospital, I met a 95 year old man with a grade 6 education. The guy was more learned IN SCIENCE than 99% of people I have ever met. Born in a vilage. WWII survivor. Guy shoveled snow and coal for a living. Somehow got halfway across the globe, traveled the world, learned 12 languages... we were talking about quantum mechanics at his bedside... the guy is bringing up famous scientists he has heard of... photographic memory at age 95! He learned all of this without wikipedia or google, and he regrets not being able to use a computer. In his youth days, he would assist a vet in the village, and wanted to pursue medicine or science, but he was poor and had to work. Then the war broke out and he went off to fight. He never had the chance!!!
In my opinion, natural "intelligence", or whatever innate thing it is supposed to measure (I am not sure), is not well correlated with medical school. Instead, I believe that hard work (not being lazy) and having discipline are better correlated with medical school admissions. Essentially, you are hopping through a series of hoops and need to meet a certain level of competence in each one to become successful. You also need a bit of privilege. Small insignificant looking things like living in a border town might make you IP or OOS, and speaking of looks, I won't get into race/affirmative action/type of name you carry/etc.
Even if you had the privileged IQ of a genius/outlier and an interest in the medical profession, you would be required to navigate through all of the requirements by taking a 4 year degree with all prereqs, doing clinical volunteering somewhere with patients, reading the MCAT wiki article before scoring a 45 in record time, navigating the SDN* forums for ideas, getting LoRs from people who love and hate you, etc. This requires some effort.
Yet, you could be a privileged genius at medicine admissions, and still become a poor doctor, but that's a different matter.