This section brings together articles about vitamin D, a nutrient the body produces through sun exposure and also absorbs from certain foods and supplements. Coverage includes how deficiency is typically identified, which population groups are more often affected, and how research on aging intersects with vitamin D status.
The articles address what levels are generally considered sufficient, which dietary sources contain the nutrient, and how supplementation is commonly approached when sunlight exposure is limited. This is useful for readers who want background before discussing blood test results or supplement choices with a health professional, and does not substitute medical advice.
