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Children and teens Although the prevalence of vitamin D deficiency in children and teens varies by geographic region, studies estimate a prevalence rate of about 15% in children ages 1 through 11 and 14% in children and teens ages 12 through 19 ( Children and teens who have overweight or obesity are much more likely to be deficient in vitamin D than children who are considered to be at a healthy weight ( irritability developmental delays bone fractures slow growth muscle pain Its important to note that vitamin D deficiency may be more apparent in young children than adolescents, as many teens who are deficient are asymptomatic or have vague symptoms
Its most likely to occur in people who: smoke consume a limited variety of food have nutrient absorption problems Vitamin C injections are approved by the U.S
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doi:10.1083/jcb.200311055
HIF-1 activation leads to the transcription of genes involved in angiogenesis, glycolysis, and cell survival, facilitating tumor growth and adaptation to hypoxic conditions [108]
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