Toxins produced by E. Coli, prime cause of travellers’ diarrhea, inhibit the growth of cancer cells in the colon. Colon cancer is the third most common cancer in the developed world, but far less common in countries associated with Delhi Belly. Of course, it’s not just the toxins that are the cause of this, the diet and lifestyle of Westerners probably contributes and longer term diseases are less likely to be spotted in the Third World when so many people are dying from diarrhea itself.

via Fark