Fieve says that lithium hasn’t been extensively tested as a treatment for other conditions in part because it’s a natural substance: Elements on the periodic table can’t be patented. Pharmaceutical companies therefore have little incentive to promote lithium or develop other uses for it, despite its potential.
.. The lithium we have on Earth now — part stardust, part primordial dust and part earth dust — is a constituent part of our planet, one that sometimes shapes personalities. The thought occurred to me that maybe my taking lithium prophesied a lithium-dependent future, connecting it to a past when our world was birthed in fiery lithium explosions.