SSN587,
Your observation is correct and there are many medicated people in the religion. When I was new in the religion, a man I worked for told me that there was a high incidence of emotional problems with JWs and mentioned somebody he knew 'with problems' who became one, etc. I was highly insulted, of course, and tried to defend the religion. You might have said I had 'problems' too. I was young, my family was dysfunctional and I was trying to find myself. But, I was only interested in JWs because of end-time prophecy and had no idea it was a high-control group.
Anyway, fast forward to many years later....Yes, I wholeheartedly agree that the religion is filled with depressed people. Did these people come into the religion depressed OR did they get depressed later? I think the answer is a little of both with more leaning towards 'getting depressed later'. Quite simply, I feel the religion promotes an unhealthy way of thinking and ridiculous rules and regulations. I don't know what their stand is now but, in the past the religion has been against going to 'worldly' therapists and psychiatrists because they supposedly promote unbiblical ways of thinking. This is only partly true.
What the religion is really afraid of is that the doctor will tell the witness patient that the RELIGION is the cause of his/her problems and they should stop going. I know this for a fact because a JW friend's non-JW family told me this.