Sophie,
I'm with jtg here. If you make a claim like you do with this:
"Because this sect exhibits mental illness 16 times more than the general population, it is important to find a solution, in order to raise awareness and help people"
and you do not back it up with facts, you will filter out participation, at least to some degree, by those who will doubt your factual basis and your motives.
When putting together your project, you need to steer clear of such unsubstantiated/dubious claims if you want full participation.
Best wishes on your work.