I saw this article a couple of years ago in the New York Times travel section and saved it in my archives - only to discover it yesterday. Pretty well written overview of things to remember to do and take if you are traveling over a long period of time. It also mentions the SelectWisely cards as a way to avoid eating certain types of foods. Good advice. https://www.nytimes.com/2017/06/19/travel/long-term-travel-tips-budget-insurance.html