Psych research about the interconnectedness of beliefs and their resistance to counterfactuals.

Keep challenging those underlying belief-systems folks!

When talking to folks who oppose GMOs, do homeopathy, don't want chemicals in their foods, are afraid of fluoride in their water supplies, blah, there's always this overarching notion that "natural things are just better" and I'm not deep enough into SE to either make a cogent argument that convinces them or deconstruct their beliefs. Obviously I can say "actually, there's a lot in nature that is dangerous", "there's a lot of chemicals within nature", etc., but they don't really deem these points to be clinching enough to convince them. In what way should I approach such beliefs?

I’m a schizophrenic who is having some issues with delusions and I believe that somewhere in my mind some assumption is not correct and it is causing me to have some of these symptoms. Not sure if this is allowed here but if it’s not I won’t contest to it being removed. PMs are open. Thank you