Yeah, find a way to work it into your essay. Something about travel opening up your horizons and realizing how lucky we are to have healthcare in the US (even if much of it leaves a lot to be desired).
I also lived and worked abroad for many years, two of them spent among the nomads of the Sahara desert. I made sure I mentioned that in my essay. I think many AdCom members gave me interviews just so they can hear the rest of the story.