Indian food - good for your health?

When I came to India, I was apprehensive about eating Indian food for two months.  As many of you know, I have IBS (Irritable Bowel Syndrome), which means that I can get a very bad upset stomach if I eat the wrong thing (sometimes it seems completely random).  For the past year and a half, I have periodically had stomach problems.  However, since coming to India I have not really had any problems.  I don't know if it's the food, drinking a lot of water, going to the gym regularly, or some combination of those - but I feel healthier than I have in a long time.