If you think about it, a lot of advocacy short and full length films are the same way, regardless of who their for. Soldiers, cancer patients, disaster victims, and all sorts of people have films that touch people. Even animals do. I think that people react better and want to help when they're presented a situation and get to watch it unwind. Even hour long documentaries can grip people.
With arthritis and other painful diseases, we have many forms of advocacy and charity. But why is it, we always seem to come in second place. Why is that?
I, personally, blame the commercials for heating pads, pain topicals, medicines and such that down play the disease SO much. Think about it. People believe a lot of what they see, and many tend to believe ONLY what they see.