What to do if i'm a tourist and want to know how can i take a healthy food during travel to different countries of the world?

Travel Food Choices: Even with the best care, it is difficult to prevent traveler's diarrhea completely. Your best selections are always to eat hot food prepared on the spot, not food sitting warm for long periods. Cook or boil your vegetables and eat only smaller fruits that you cut and clean yourself. And remember to either boil your water, drink carbonated water or use a UV light pen to assure your water is clean.