Vitamin D not related to feeling SAD

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Related tags: Depressive symptoms, Vitamin d

Low levels of vitamin D are not linked to the symptoms of depression associated with Seasonal Affective Disorder (SAD), says British researchers.

According to findings published in the Journal of Affective Disorders​, analysis of blood levels of vitamin D, in the form of 25-hydroxy-vitamin D (25(OH)D), of more than 3,000 people highlighted no clear links between depressive symptoms and 25(OH)D levels.

Vitamin D deficiency exists when the concentration of 25-hydroxy-vitamin D (25-OH-D) in the blood serum occurs at 12ng/ml (nanograms/millilitre) or less. The normal concentration of 25-hydroxy-vitamin D in the blood serum is 25-50ng/ml.

“Few studies have explored the association between blood 25-hydroxyvitamin D concentrations and depression in the general population. A deficiency of vitamin D has also been attributed to several chronic diseases, including osteoporosis, common cancers, autoimmune and cardiovascular diseases,”​ said lead author Dr Oscar Franco from Warwick Medical School.

"Previous studies into the effects of vitamin D supplementation have produced mixed results. More studies are still needed to evaluate whether vitamin D is associated with seasonal affective disorders, but our study does raise questions about the effects of taking more vitamin D to combat depressive symptoms,”​ he added.

Related topics: Research

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