Hashimoto's disease is the most common autoimmune disease. It is characterized by the destruction of the thyroid, which usually leads to hypothyroidism in the long term. If hypothyroidism occurs, the treatment is the substitution of the thyroid hormones. But before reaching that point, many endocrinologists recommend selenium, because we believe that in this way, the destruction of the thyroid is delayed. May vitamin D also help in this case? Over the last years, it has become apparent that many people are vitamin-D deficient, while many people suffer from Hashimoto's disease as well as from severe vitamin-D deficiency. It is worth pointing out here that it hasn't become clear yet if vitamin-D deficiency is one of the factors that lead to Hashimoto's disease, or the opposite, namely if Hashimoto's disease leads to vitamin-D deficiency. However, some researchers studied if the administration of vitamin D to people suffering from Hashimoto's disease can protect the thyroid, by studying the antithyroid antibodies that lead to its destruction. The study was carried out on 42 women suffering from Hashimoto's disease that were divided into two groups. The first group took a placebo, while the second group took 50,000 IU of vitamin D once a week for three months. At the end of this period, it became apparent that in the women that had taken vitamin D, the antithyroid antibodies decreased, as did TSH, which suggests a better function of the thyroid. On the other hand, the same although to a smaller extent, happened in the control group. However, the researchers concluded that vitamin-D supplements may help in the treatment of Hashimoto's disease, although they recommend further and larger studies to confirm the data, so that something like that can start being widely applied. In any case, before you decide taking vitamin D in any way, you should inform your doctor, and vitamin D should only be administered with regular measurements of vitamin-D levels in the blood. Thank you very much.

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