can help show whether your vitamin D level is low, normal, or too high. It is also important not to take high doses of vitamin D without medical advice, because too much vitamin D from supplements can be harmful. Mayo Clinic notes that excessive vitamin D may cause problems such as stomach upset, weakness, confusion, heart rhythm issues, and kidney damage.
Low vitamin D may also be linked with changes in mood. Some people with deficiency report feeling low, less motivated, or more emotionally drained than usual. Cleveland Clinic includes
