A psychologist called Havor Montague published a medical paper in 1977 in which he discussed the furtiveness with which JWs approach mental health specialists. They fear that Jehovah's organisation will be reproached by an admission that they need psychiatric or psychological treatment, and Havor wrote, "In the writer's work as a therapist, a significant number of Witness patients would clearly have never have sought psychotherapy if the writer had not been seen as an active Witness." (Link to the paper available at jwfacts.)
Another JW, Scott Wolfenden, of Newark, New Jersey, who has been active on Wikipedia trying to promote both his website and his religion, runs a psychology practice that presumably would invite JW patients, and he strikes me as the sort of person who would do anything to avoid blaming the religion for turning his patients into basket cases.
As Montague notes, there is an incredible pressure within the organisation to hide these facts in order to present the brothers as the happiest people on earth. Since leaving this religion I have seriously wondered just how much mental damage I suffered in my two decades (including my formative years) inside this nuthouse. It affects your outlook, and relationships with others, in so many ways.