[dwaltrip]

If they play an important role in reducing the prevalence and severity of mental illness by an order of magnitude, I think that would be a huge boon to society, human well-being, and the advance of civilization. There have been a number of very promising studies.

It's hard to fully capture the damage that is done by debilitating depression or anxiety, for example. I think the statistics are that 20% of the entire population will experience at least one episode during their lifetime. And that number has been increasing.