Bone pain and muscle weakness: Vitamin D is essential for maintaining healthy bones, and a deficiency can cause bone pain, muscle weakness, and an increased risk of fractures.

Fatigue: Vitamin D plays a role in energy metabolism, and a deficiency can cause fatigue and a lack of energy.

Mood changes: Vitamin D receptors are present in the brain, and a deficiency has been linked to an increased risk of depression and other mood disorders.

Impaired immune function: Vitamin D plays a crucial role in maintaining a healthy immune system, and a deficiency can increase the risk of infections and autoimmune diseases.

Delayed wound healing: Vitamin D is involved in the process of wound healing, and a deficiency can impair this process.

Hair loss: While rare, severe vitamin D deficiency can cause hair loss.
vitamin d deficiency complications?
Vitamin D deficiency can lead to several complications, particularly if it is left untreated. Some of the potential complications of vitamin D deficiency include:

Osteomalacia and rickets: Vitamin D is essential for healthy bone development, and a deficiency can cause softening of the bones (osteomalacia) in adults and rickets in children.