I have personal experience with this, having lived in southern arizona for 6 years. Now, living near Guadalajara for the past few years, we see hospitals popping up like mushrooms locally, to serve the medical tourism industry. People come, have top notch surgeries, excellent, personal care, and save a boatload of money. My daughter had a new surgery developed in Switzerland that is not yet available in the US, stayed in a lovely boutique hospital, and it cost very little. Also the dentists use less toxic filling materials from Germany.
Lots of deaths from heart attacks and cancers are actually sourced in old dental work leaking toxic mercury into the system continually. I know, I almost died from not being able to afford dental work. Viva México!