There were a bunch of experts on the topic and they thoroughly explained their research and how they came to their conclusions! It's paced very well and you get to see how this issue affects us in different ways. The people they interviewed were super smart and from all over the world. The visuals may not be the greatest, but at the end of the day, it's the information that counts! I'm doing a civics project on this subject, and even though I've done a bunch of research on nutritional psychology, I learned a bunch of new stuff from this that I haven't seen anywhere else. It's free on YouTube :)) go check it out!!!