There's this study which came out of MSNBC.com, which claimed that patients with cognitive impairment who had kidney transplantions have improved mental functions.
Interestingly, in traditional chinese medicine, the Kidney governs the mind, marrow, and the bone. So any disorder in the kidneys can manifest problems in the Brain, mental function, the blood and bone itself.
As you may know already, Kidneys plays an important role in the blood formation, as well as calcium absorption. But this is the first time to show that improved kidney function can improve cognitive function.
This is certainly an affirmation of how much accurate TCM is, when it comes to diagnostic and pathophysiologic knowledge.