General kitchen advice
Try Organic Food : Organically-grown food costs more, but you get what you pay for. It is 2-10 times richer in minerals, contains no pesticides, and tastes better. It is better for you, your planet, and your palate. Wild unhybridized food is what your body was designed for, before our ancestors started messing with Mother Nature. Take it easy with highly hybridized fruits (bananas, seedless anything) and vegetables (carrots, beets, white potatoes).
One of the best elements of travelling is sampling local delicacies, so please don't order a burger and chips when you are in India - not only is the meat likely to be of a poor quality (sometimes so poor that it will make you sick), but you are turning down some of the most wonderful food in the world - and possibly offending your hosts.
Weight loss info
The Glycaemic Index Diet
The glycaemic index diet is based around the gi index, a chart showing food types and a score representing the ease with which the glucose and energy in the food type gets changed to sugar in the dieters bloodstream. The theory is that slow release foods (ie those foods with a low Glycaemic index score), keep you feeling full longer and help to injest less food without being miserabl;e.
It's also extremely efficient for individuals with diabetes, as the low GI foods are helpful in minimizing surges in blood glucose amount.