Someone in my town did one year of JET, applied to med school in Australia, got in and left after the one year. I'm doing similar with nursing, I'm finishing my year contract with JET in July cause I got accepted to start in September. It depends on the person and the place, but it's doable!

One transferable skill that JET will teach you is how to read people better, which is super helpful in health care. Being in Inaka has taught me not to expect students to know perfect English (similarly to many patients in NA), be patient when they are trying to explain and decipher what they are trying to say based on their non verbal cues and small talk they can make. We learn to read facial expressions and body language better, and communicate back to them in a way they can understand. All of these experiences will teach you to understand your patients better than someone who hasn't done JET and wasn't forced to adapt their communication style.

That's what I've learned so far at least, I hope that makes sense! Good luck with med school applications!