2. Infection

Those who have low vitamin D3 are at a greater risk of catching colds and developing infections because the vitamin is essential for keeping the immune system strong and capable of fighting off infections. Colds, the flu, and several bacterial infections have been linked with vitamin D deficiency. Likewise, if you get infections frequently, you may have low vitamin D3 and should ask a doctor about having your levels checked.

Symptoms and Complications of Vitamin D3 Deficiency

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