Thyroid health in some adults can be improved by increasing the conversion of T4 to T3.This can be accomplished by

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Nutritional agents that help support proper deiodination by the type 1 5'-deiodinase enzyme include selenomethionine (as L-selenomethionine) and zinc (as zinc glycinate or zinc citrate).Human studies have repeatedly demonstrated consequent reduced concentrations of thyroid hormones when a zinc deficiency is present.Supplementation with tyrosine does not appear to have a beneficial effect on elevating thyroid hormones.Synthetic flavonoid derivatives can decrease serum T4 concentrations and inhibit both the conversion of T4 to T3 and the metabolic clearance of rT3 by the selenium-dependent 5'-deiodinase.Naturally occurring flavonoids appear to have a similar inhibitory effect.Lipoic acid reduces the conversion of T4 to T3.

Thyroid Health in Some Adults Can Be Improved by Increasing