A pretty interesting report from Medco just came out. It will probably surprise few of my readers to learn that a lot more Americans were on mental health drugs in 2010 than in 2001. The details are above with around a fifth of all Americans now using pharmaceutical assistance to get by. The point where we all need drugs to cope still seems to be a number of decades off, however.
This graph of antidepressant usage by age was interesting:
Source. That is the phenomenon that if you ask people how happy they are things tend to get worse as they get older into their forties and then start getting better again. How much of this is just due to the fraction of the population that finally got their meds right? (A search of that last linked paper for "antidepressant" or "medication" turns up nothing).