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Decreased exposure of the skin to sunlight is a common cause of vitamin D deficiency. [1] People with a darker skin pigment with increased amounts of melanin may have decreased production of vitamin D. [3] Melanin absorbs ultraviolet B radiation from the sun and reduces vitamin D production. [3] Sunscreen can also reduce vitamin D production. [3]
People with low levels of vitamin D have a higher risk of developing rickets (in infants and young children) and osteomalacia, two diseases that can affect bone health and integrity.
Low levels of vitamin D in pregnancy are associated with gestational diabetes, pre-eclampsia, and small (for gestational age) infants. [128] Although taking vitamin D supplements during pregnancy raises blood levels of vitamin D in the mother at term, [129] the full extent of benefits for the mother or baby is unclear.
Vitamin D deficiency, especially in early life, is linked to an increased risk of autoimmune conditions, such as type 1 diabetes. Autoimmune diseases can be caused by a failure of T cells, a type ...
The Office of Dietary Supplements recommends getting 15 micrograms of vitamin D a day. Research suggests that low vitamin D levels may also play a role in other common forms of hair shedding, like ...
Vitamin D deficiency: Usually asymptomatic, causes reduce bone density (osteomalacia), rickets, myopathy, and is associated with the development of schizophrenia. It is typically diagnosed by measuring the concentration of the 25-hydroxyvitamin D (25(OH)D) in plasma, which is the most accurate measure of stores of vitamin D in the body ...
In past studies, researchers have said that low vitamin D levels can contribute to joint pain. Other research has indicated that low vitamin D levels can be a cause of chronic inflammation.
Hypovitaminosis D has been associated with many neurological conditions. However, an actual mechanism of action for each of the conditions has yet to be solidified. Many researchers have questioned whether the depletion of vitamin D actually causes these disorders or if vitamin D deficiency is a symptom of these disorders. [medical citation needed]
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