Dissertations / Masters in food and consumer safety / packaging - Research title [9]

The best idea for the dissertation topic about Food Packaging

Hello.
I'm new for this forum. I am in need of purposing the idea for my dissertation. I'm in graphic design major.
The topic that I want to discuss is about Food Packaging, but I still confuse what I want to write for this topic.
Can you help me to find some ideas? I am new in this dissertation and english is my second language.

I have some ideas, but don't know whether it's good or not,
- food packaging for obesity
- role of food packaging to consumerism

Thanks.