Q. is sugar good for you
This is a really broad topic. I would suggest breaking it down a little. You could do a search on "sugar and health effects", "sugar and nutrition", "sugar and obesity", "sugar and children", just to give you a few examples. I would try searching in the ProQuest database, as a starting point. If you plan to be on campus soon, stop by the library and either I or one of the library staff can help you further.