Just in case the toxicity levels of fluoride were not sufficient in the water supply, Japanese researchers are now proposing that lithium could have a protective effect in drinking water.
So how did they come to this magnificent conclusion you ask? First, the researchers examined levels of lithium in drinking water and suicide rates in the prefecture of Oita, which has a population of more than one million.
Then they found that the suicide rate was significantly lower in those areas with the highest levels of the element, they wrote in the British Journal of Psychiatry.
You would think there would be some discussion as to how the lithium entered the water supply in the first place. Instead, the team from the universities of Oita and Hiroshima found that the low levels appeared to have a positive impact of suicide rates.
High doses of lithium are already used to treat serious mood disorders.
Levels ranged from 0.7 to 59 micrograms per liter. The researchers speculated that while these levels were low, there may be a cumulative protective effect on the brain from years of drinking this tap water.
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