What is the result of Vitamin D deficiency in adults?

Vitamin D deficiency in adults primarily leads to osteoporosis, which is a condition characterized by weakened bones and an increased risk of fractures. Vitamin D plays a crucial role in calcium absorption, essential for maintaining bone density and strength. Without adequate levels of vitamin D, the body struggles to absorb calcium effectively, leading to a decrease in bone mineralization. Over time, this process contributes to the development of osteoporosis.

In contrast, scurvy results from a deficiency of vitamin C, while pellagra is associated with a lack of niacin (vitamin B3). Anemia can occur for various reasons, including iron deficiency, but it is not directly linked to vitamin D deficiency. Thus, osteoporosis is the specific consequence of inadequate vitamin D levels in adults.