The discovery that many people with life problem or occasional bad moods would willingly dose themselves with antidepressants sailed the drug industry through the 2000s. A good chunk of the $4.5 billion a year direct-to-consumer advertising has been devoted to convincing people they don’t have problems with their job, the economy and their family, they have depression. Especially because depression can’t be diagnosed from a blood test.

Unfortunately, three things dried up the depression gravy train for the drug industry. Blockbusters went off patent and generics took off, antidepressants were linked with gory and unpredictable violence, especially in young users and — they didn’t even work, according to medical articles!