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4. Helps maintain cognitive abilities

Selenium and selenoproteins may slow the progression of dementia and certain neurodegenerative disorders, such as Huntington's, Parkinson's, and Alzheimer's disease. Selenium supplements have also had positive effects in the treatment of epilepsy. Researchers are still working to understand how selenoproteins slow these disorders and determine selenium's protective effects against dementia. Selenium supplements at the recommended daily value may help prevent or slow cognitive decline, but high levels of selenium can actually be toxic to neurons.  It is important to speak to a doctor to determine an appropriate supplement dose.

cognitive, neurodegenerative, neurons, selenoproteins FatCamera / Getty Images

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