If you are in India then you have to be careful to look after your health. India is not the cleanest of all countries, in fact its perhaps one of the worst countries you will encounter. First things first, always drink bottled water so that you are drinking clean water. Secondly eat in large restaurants to ensure that they practice good hygiene practices. Here's more on Traveler’s diarrhea in India and how to prevent it http://www.shalusharma.com/travelers-diarrhea-in-india-and-how-to-prevent-it/

Photo by Felipe Skroski