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Vitamin D deficiency or hypovitaminosis D is a vitamin D level that is below normal. It most commonly occurs in people when they have inadequate exposure to sunlight , particularly sunlight with adequate ultraviolet B rays (UVB).
An alternative to using bright lights is to take vitamin D supplements. [50] [51] [52] However, studies did not show a link between vitamin D levels and depressive symptoms in elderly Chinese, [53] nor among elderly British women given only 800IU when 6,000IU is needed.
The Signs of Vitamin D Deficiency. Vitamin D deficiency is a pretty common problem for people year-round—and that deficit only increases in the winter. Be sure to stay on top of your doctor ...
While some studies have found that vitamin D 3 raises 25(OH)D blood levels faster and remains active in the body longer, [42] [43] others contend that vitamin D 2 sources are equally bioavailable and effective for raising and sustaining 25(OH)D. [44] [45] If digestive disorders compromise absorption, then intramuscular injection of up to ...
Signs of vitamin D deficiency. Fatigue. Mood changes. Muscle pain and weakness. Reduced immune function. Increased inflammation. Frequent infections. Rickets (in children) Bone disorders.
However, in more recent literature many researchers have considered 30 ng/mL to be an insufficient concentration of vitamin D. [6] Subnormal levels of vitamin D are usually caused by poor nutrition or a lack of sun exposure. [5] Risk factors for hypovitaminosis D include premature birth, darker skin pigmentation, obesity, malabsorption, and ...
Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, and skin wound infections.
There is limited evidence that vitamin D supplementation is of value in alleviating the symptoms of depression in individuals who are vitamin D-deficient. [102] Lithium appears effective at lowering the risk of suicide in those with bipolar disorder and unipolar depression to nearly the same levels as the general population. [218]
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