What is a good research topic for my social science class based on the food industry?

In my class we read the book In Defense Of Food by Michael Pollan.We need a research topic for and paper based on the food industry off of something he talked about in the book. It needs to be specific and to the point. Any help would be greatly appreciated even if it is just a start. Thank you.What is a good research topic for my social science class based on the food industry?
Look into the raw milk and why the government keeps trying to shut those people down. Below are three links to get you started. There are loads more links like that just google raw milk.What is a good research topic for my social science class based on the food industry?
Why they sell more fatty foods then healthy choices.