I was skeptical when the article didn't mention any numbers, and even more skeptical when the report's summary didn't mention them. But then I saw this graph, a

I was skeptical when the article didn't mention any numbers, and even more skeptical when the report's summary didn't mention them. But then I saw this graph, and I'm really kind of surprised at how big of an effect tiny amounts of lithium actually had: http://dustincurtis.com/screenshots/Lithium_levels_in_drinking_water_and_risk_of_suicide-20090502-030727.jpg http://dustincurtis.com/screenshots/Lithium_levels_in_drinki...