There’s increasing evidence to suggest that low levels of vitamin D may play a role in thyroid disorders.
Vitamin D supplementationalso has shown promise as a way to help treat thyroid disease.
Vitamin D levels are measured with a simple blood test called the 25-hydroxyvitamin D test.

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Diet is an issue too.
At high doses, D2 may be less potent.
Vitamin D supplements come in capsule, gummy, liquid, or chewable tablet forms.
Vitamin D is also often found in multivitamins and calcium supplements.
Whichever you take, it’s important to read labels so that you know how much you’re getting.
Most vitamin D supplements provide 400 IU per dose, which is several hundred IU shy of the RDA.
But most individuals getsomevitamin D naturally from sun exposure and by consuming fortified foods.
Too much vitamin D can be harmful.
Signs of toxicity include nausea, vomiting, poor appetite, constipation, weakness, and weight loss.
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Office of Dietary Supplements.Vitamin D fact sheet for health professionals.
Kim D.The role of vitamin D in thyroid diseases.IJMS.