Which of the following is not caused by vitamin deficiency?

Diabetes is primarily a metabolic disorder characterized by high blood sugar levels due to the body's inability to produce or respond to insulin effectively. While nutrition plays an important role in the management and prevention of diabetes, the condition itself is not caused by a deficiency in vitamins or minerals.

In contrast, scurvy, anemia, and osteoporosis are all linked to specific vitamin deficiencies. Scurvy results from a lack of vitamin C, which is essential for collagen synthesis and maintenance of connective tissues. Anemia can often be due to deficiencies in iron, vitamin B12, or folate, which are crucial for red blood cell production. Osteoporosis is closely related to deficiencies in calcium and vitamin D, both of which are important for bone health. Understanding these connections can help in identifying dietary needs and addressing health issues effectively.