Iodine

Essential raw material for producing thyroid hormones T3 and T4. Deficiency can lead to goitre, hypothyroidism and nodular thyroid disease.

Selenium

Supports conversion of T4 into active T3 and protects the thyroid from oxidative stress. Strong evidence for reducing antibodies in Hashimoto's.

Zinc

Required for T3 and T4 synthesis and immune regulation. Deficiency is common in hypothyroidism and can impair thyroid receptor sensitivity.

Iron

Needed for thyroid hormone synthesis via the enzyme thyroid peroxidase. Low iron can worsen fatigue and impair hormone production even when TSH appears normal.

Vitamin D

Plays a central role in immune regulation. Low levels are strongly associated with autoimmune thyroid conditions, including Hashimoto's thyroiditis.

Magnesium

Supports nervous system function and the stress response. Also involved in T4 to T3 conversion pathways and over 300 enzymatic processes in the body.