Totally agree with BelArgUSA and others, stick to the local dishes that people know how to cook properly and avoid western dishes. I lived and worked in India for four months a couple of years ago and had no problems.
I always carried a little bottle of antiseptic handwash with me to use before meals (buy it there for about 20p) and otherwise had a great time trying the weird and wonderful foods.
I also seem to remember the Goans recommending Fenni, their local fire water as a cure for everything. Personally I'd rather drink toilet duck but each to their own!