Erik McLaughlin, MD shares some useful tips for staying healthy and happy while traveling abroad.
Traveler's Diarrhea
Not a good place to have TD!

We are in constant contact with bacteria - the things we touch, the air we breathe, and especially the food we eat. Our bodies build up a tolerance, but what happens when you travel so far that there are new types of nasties for which your stomach isn't ready?
Most backpackers experience
Traveler's Diarrhea at some point in their trip, especially if you take advantage of all the good local street food, but it doesn't have to be a show stopper. Here is the lowdown for avoiding traveler's diarrhea (TD).
Read about Traveler's diarrhea

Malaria

Mosquitoes kill more people every year than snakes, sharks, angry porcupines, or even bullets.
Unfortunately, taking preventatives full of side effects and hosing yourself down with poisonous chemicals is not very pleasant either.
Read what AdventureDoc has to say about Malaria and find out what your choices are!
Are you traveling to a risk area?
Malaria Info
or
Avoid Mosquitoes
or
Malaria discussion in the forums