To stay as healthy as you can while away, hope for the best and plan for the worst. Even though
we take good care of ourselves, stuff happens - and it doesn't always wait until we get home.
Many factors contribute to risk while traveling, e.g. medical stability, situational stress, immobility, dietary needs, medication compliance, climate, air quality,
resource portability/availability, and the knowledge that so many things are simply out of our control. We can gain control of many risks by planning & preparing well.
Make a concise medical problem list with pertinent history, findings & current treatments - and make sure it's available to doctors where you'll be.
You can carry a copy with you (e.g. on your phone or a CD) or make it available on the internet. Your doctor or hospital may be able to do this for you,
and there are mobile health record sites to which you can subscribe.
Will you be able to replace your medications if you lose them while away? Having a list of acceptable locally available substitutes & where you can get them is a
very good idea. The same approach is essential for medical equipment on which your health depends, e.g. monitors, glucometers, breathing machines. If you can't live without something,
you need to secure its availability & function. Your doctors can help you with this work.