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.

Woman wearing sun hat

Aleksandra Jankovic / Stocksy United

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.

2018;10(6):e2741.

doi:10.7759/cureus.2741

National Institutes of Health.

Office of Dietary Supplements.Vitamin D fact sheet for health professionals.

Kim D.The role of vitamin D in thyroid diseases.IJMS.