Since at least back to the 1960s in Canada, JWs have been travelling to Mexico for cancer treatment. And, I believe, other medical treatments.
Because I watched my uncle die of cancer back in 1962, unable to receive treatment because the doctors couldn't operate without blood, I have always been curious as to why the JWs with cancer were going to Mexico. My aunt and uncle didn't have the money to go to Mexico and instead went to Vancouver for some kind of treatment.
I just read a post on reddit that named the cancer therapy in Mexico that the JWs often elect for treatment.
The Gerson Therapy.
Developed by Max Gerson, a German-born physician who immigrated to the States in 1936, bringing with him his ideas on how to cure cancer and...well, almost anything. Except, his ideas and methods were not able to be proven and are, in fact, dangerous.
http://en.wikipedia.org/wiki/Max_Gerson
It is interesting to note that his therapy included not using aluminum cookware. Sound familiar?
The methods and ideas that are used in Gerson Therapy reflect much of the early 'medical' advice given to the Bible Students back in the days of pre-JW. The early Consolation magazines of the 1920s and 30s endorse many of the same methods and principles that Max Gerson was promoting in his therapy. And, Gerson would have shared the anti-AMA sentiments of the Watchtower in the time he spent in New York prior to his therapy being banned in the States.
I now understand the attraction to Mexico for medical treatment for JWs.