I know BL is a place where many understand the horrors of true depression but ive had debates with people who say (non bipolar) depression is all circumstances.(i.e.unhappiness)
I had months where i dont leave the house, dress , wash much etc.. but this is due to paranoia and anxiety/agoraphobia etc..and this makes me suicidly depressed..
Anyway back to the main point , can people with great jobs, no childhood trauma's etc.. be going about their lives and all of a sudden wham! their housebound, depressed or must they loose their job/wife first.
Also ive read chemical imbalances ,dont exist with depression (see tom cruise) and are a "scam" by large drug companys who make the anti-depressants. My personal opinion is depression is over diagnoised far too much but i do regard it as an illness on its own.(non manic)
Depression and other forms of mental illness have existed as long as humans have. Mental illness is not a product of pharmaceutical companies. Mental illnesses, especially depression, existed way, way before drug companies ever came into being. There are reports of famous figures suffering from crippling depression and bipolar disorder as early as the 1500s. The bible also has examples of depression and mental illness in it, even though it isn't exactly too reliable a source.
And yes, people can have picture perfect lives and then, suddenly, seemingly out of nowhere, become extremely depressed and non-functional; it happened to me (bipolar depression) and I have a few relatives who suddenly found out that they suffered from unipolar depression. Different forms of mental illness express themselves typically at different age ranges for males and females.
Tom Cruise is a Scientologist; those people are kind of whacko. They are basically a cult.
Also, "chemical imbalance" is the simplest of simplest ways to explain mental health issues. It isn't that simple.
If you are curious about mental illness and want to learn about it I suggest reading a lot of books about it. If you can get hold of a few old, used copies of college-level introductory courses to psychology they usually cover the history of mental illness. Pretty interesting stuff.
Some people in this thread seem to completely misunderstand what depression is. It isn't caused solely by experiences in life; it's clinical. Biology plays a role in it. The "depression" that most people think of, when you lose your job, when someone close to you dies, when your girlfriend or spouse leaves you, that isn't major (also known as clinical or unipolar) depression. That isn't the type of depression that is considered a mental health issue. It isn't something that people can just "get over" or go out with friends, go to a park, or partake in their favorite activities to get over. It's just not possible. Actual clinical depression is much, much worse.