Vitamin D plays a crucial role in supporting the immune system, so frequent colds, flu, or infections can be a sign of deficiency.
Low levels of Vitamin D can lead to persistent fatigue and low energy, even after adequate rest and sleep.
Vitamin D helps in calcium absorption, so deficiency can cause bone pain, particularly in the lower back, and increase the risk of bone disorders.
Vitamin D deficiency has been linked to mood disorders, including depression, as it influences brain function and the regulation of mood-related hormones.
Inadequate levels of Vitamin D can result in delayed healing of cuts, injuries, or surgical wounds, as it plays a role in skin repair and regeneration.