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As the drugs of the control groups or the background therapies were not specifically defined in some of the included articles, and only one compared the effects of high and normal doses of experimental drugs, we were unable to perform a more detailed subgroup analysis according to them
Results can vary between individuals
Selenium is a cofactor for enzymes that are present in thyroid cells, such as iodothyronine deiodinase (DIO), which catalyzes the conversion of T4 to T3, thioredoxin reductase (TR), which is involved in the regulation of the redox state, and glutathione peroxidase (GPx), which catalyzes the reduction of H 2 O 2 to H 2 O, using reduced glutathione (GSH) as a cosubstrate
The Neurocognition Index (NCI) is calculated based on five tasks: memory, psychomotor speed, reaction time, complex attention, and cognitive flexibility
Always talk openly with your healthcare team about your supplement experience
