What is the recommended daily dosage of zinc for individuals with autoimmune thyroid conditions?

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The recommended daily dosage of zinc for individuals with autoimmune thyroid conditions, such as Hashimoto's thyroiditis, varies based on several factors including age, sex, and specific health conditions. Here are some key points to consider:

1. General Recommendations:
   • For adults, the Tolerable Upper Intake Level (UL) for zinc is 40 mg per day.
   • Some sources suggest a range of 5 mg to 15 mg per day for thyroid patients.
2. Specific Studies and Recommendations:
   • A study found that zinc supplementation appeared to have a favorable effect on thyroid hormone levels, particularly total T3, and resting metabolic rate (RMR).
   • Another study indicated that zinc supplementation did not improve thyroid function, autoantibodies, or markers of oxidative stress among children with autoimmune thyroiditis.
3. Considerations for Zinc Deficiency:
   • Zinc deficiency can impair the conversion of the inactive thyroid hormone T4 into its active form T3, leading to symptoms such as fatigue, hair loss, and weight gain.
   • Zinc is also important for immune function, wound healing, and reducing oxidative stress and inflammation, which are beneficial for individuals with autoimmune thyroid conditions.
4. Dietary Sources and Supplements:
   • Zinc is found in animal proteins, nuts, and whole grains.
   • For those with zinc deficiency, supplementation may be necessary. It is recommended to consult a healthcare provider to determine the appropriate dosage and ensure it does not interfere with existing treatments or conditions.

In summary, while the general recommendation for zinc intake is up to 40 mg per day for adults, specific dosages for individuals with autoimmune thyroid conditions may vary. It is crucial to consult with a healthcare provider to determine the appropriate dosage based on individual health needs and conditions.