Relationship: Hypothyroid and vitamin D

Evidence supporting the use of: Vitamin D
For the health condition: Hypothyroid

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Vitamin D is sometimes used as an adjunct in the management of hypothyroidism, though it is not a primary treatment. The rationale for its use is based on scientific observations that vitamin D deficiency is more common in individuals with autoimmune thyroid diseases, such as Hashimoto’s thyroiditis, which is the most frequent cause of hypothyroidism. Several studies have found lower levels of serum vitamin D in patients with autoimmune hypothyroidism compared to healthy controls. Furthermore, vitamin D has immunomodulatory effects that may influence the development or severity of autoimmune conditions. Some small interventional studies suggest that correcting vitamin D deficiency in hypothyroid patients may modestly reduce thyroid autoantibody levels (such as anti-TPO antibodies), although the impact on thyroid hormone levels or clinical hypothyroidism is less clear.

Despite these associations and the potential role of vitamin D in immune system regulation, current scientific evidence does not support vitamin D supplementation as a treatment to restore normal thyroid function in hypothyroid patients without deficiency. Its use is justified mainly to correct coexisting vitamin D deficiency, which can have other health consequences. Thus, while there is some scientific basis for vitamin D's supportive role in hypothyroid patients—especially those with autoimmune thyroiditis—the evidence that it directly treats hypothyroidism is limited (rated 2/5), and it should not replace established thyroid hormone replacement therapy.

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Evidence supporting the use of: Vitamin D
For the health condition: Hypothyroid

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Synopsis

Other ingredients used for Hypothyroid

Other health conditions supported by vitamin D

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Health Concerns

Brands

Evidence supporting the use of: Vitamin DFor the health condition: Hypothyroid

Table of Contents

Synopsis

Other ingredients used for Hypothyroid

Other health conditions supported by vitamin D

Products containing vitamin D

Evidence supporting the use of: Vitamin D
For the health condition: Hypothyroid