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Dietary requirements for vitamin D: An investigation of the relative significance of dietary intake and sunlight on vitamin D status in adolescents and adults
Project Code: N05063
University College Cork
The human body can obtain vitamin D either through diet or through the exposure of skin to UV-B light, through exposure to summer sunlight. However, intakes of vitamin D through diet are low and many people have a low vitamin D status, particularly in late winter, as winter sunlight does not contain the necessary UV-B light. The study investigated how much dietary vitamin D is required to maintain vitamin D status within an acceptable range all year round, and particularly during winter.
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