[southeastern]

That could be a part of it, but there is a documented effect of marijuana "triggering" mental illness in those who are susceptible to mental illness. For a certain portion of the population marijuana use will directly lead to the onset of mental illness

[techbio]

But aren't the scare quotes necessary to the statement? Ie. it can appear that a "trigger" is actuated, because we do not know what is happening and reach for metaphor?