This may include weakness, aching muscles, or cramps. Cleveland Clinic lists muscle weakness, muscle aches, and muscle cramps among possible signs of vitamin D deficiency in adults.
Muscle symptoms may make it harder to exercise, climb stairs, or do normal daily tasks. Like fatigue, muscle pain can have many causes, so it is important not to self-diagnose. A healthcare provider can decide whether a vitamin D test or other checks are needed.
Low vitamin D may also be linked with changes in mood. Some people with deficiency report feeling low,
