When the sun is out, your body can potentially make its own vitamin D, but it still may make sense to continue with ...

Many people may have low vitamin D levels. Experts say this is a common issue. It can cause fatigue and muscle weakness. A ...

Women between ages of 30 and 70 need about 600 international units, and once they're over 70, that number goes up to about ...

"Many Americans are deficient in vitamin D due to limited sun exposure from indoor lifestyles, sunscreen use and our northern ...

Vitamin D deficiency, a widespread global health issue affecting billions, stems from insufficient sunlight exposure, diet, or absorption. Older adults, infants, and those with darker skin are at ...