Hypothyroidism Los Angeles Thyroid Hormone Therapy Health and Vitality Center This one antioxidant is ULTRA important for your thyroid function Glutathione is our body's master antioxidant meaning it's the most important and abundant one. As it relates to the thyroid, think Propylthiouracil induced congenital hypothyroidism upregulates vimentin phosphorylation and depletes antioxidant defenses in immature rat testis in: Journal of Molecular Endocrinology Volume 40 Issue 3 (2008) Hashimoto's thyroiditis as an autoimmune disorder Discover Medicine Springer Nature Link