As long as cases of treated depression are the measured/determining value, there will never be a "truthful" representation of depression. For someone who has lived both in the US (where they LOVE to diagnose and medicate... great for business), and Japan (where most people don't even identify things like, say alcoholism or depression as actual disorders), I find the assertion that Japan being the least depressed country laughably inaccurate. If they knew the first thing about Japanese culture, they would realize that depression and suicide are seen as failures and that the Japanese like to avoid making failure public. To the "outside." This is a good and valuable topic to study, but more effective methods are sorely needed.