Selenium may be used as a dietary supplement against brain impairments."

Quote:

"Our results showed that Se (selenium) improved cerebrum and cerebellum MMI-induced damages in suckling rats. 

Moreover, we concluded that Se (selenium) is an important neuroprotective element that may be used as a dietary supplement against brain impairments."

Unquote

Info source:

https://www.ncbi.nlm.nih.gov/pubmed/19615434