Mmmmmmmmpossible research topic? :)

One topic I would be very interested in is the Fast Food Industry. It  has grown to an amazing level of popularity. Millions of people are trying to stop them, yet many more are continuing to eat it. I personally eat it quite often but realize it could be very bad for me in the long run. This is why I want to research the topic. I want to realize the specific effects my decisions will have on my body.